TOO BIG TO COMPREHEND! First Time Reaction To How the Universe is Way Bigger Than You Think!

Рет қаралды 72,767

19 күн бұрын

🌌 About the Video:
Prepare to have your mind expanded! The video "How the Universe is Way Bigger Than You Think" takes viewers on a journey through the vastness of the cosmos, illustrating just how immense the universe really is compared to Earth. Using stunning visuals and compelling data, this video puts into perspective the scales of planets, stars, and galaxies, revealing the mind-boggling size of the universe we inhabit.
Join us as we react to "How the Universe is Way Bigger Than You Think" for the first time! We're ready to be amazed by the sheer scale of the cosmos and to learn about the astronomical sizes and distances that make up our universe. Watch our reaction to see how we grapple with the incomprehensible expanses and the awe-inspiring facts presented in this enlightening exploration.
🔭 What to Expect in This Video:
First Impressions: Our initial reactions to the staggering facts and figures about the universe's size.
Educational Insights: Discussing the most surprising and educational points presented in the video.
Conceptual Understanding: Reflecting on how the video helps viewers comprehend the scale of the universe through comparisons and visual aids.
Overall Impact: Considering how this newfound perspective changes our understanding of our place in the cosmos.
🤜🤛 Who We Are:
We’re a couple from Canada who loves exploring new ideas and gaining knowledge about the world and beyond. Join us as we delve into educational content that challenges our perceptions and expands our understanding of the universe.
👍 Like and Subscribe:
If you were astonished by our reaction to "How the Universe is Way Bigger Than You Think," please like, subscribe, and click the bell. We’re excited to share more reactions to content that educates and fascinates, discussing complex ideas in an accessible way.
💬 Join the Conversation:
What did you think of the scale of the universe as presented in the video? Did any facts particularly blow your mind? Let us know in the comments below, and suggest other science or educational topics you'd like us to explore!
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Пікірлер: 829

@BogeyDopeYT 18 күн бұрын

The real mind blower is this: We have equipment that can see things that are millions of light years away, but they are in effect looking back in time. If something is 1 million light years away, then the light that is reaching the viewer today left that object 1 million years ago. When you look into the sky at objects, you can never see them at the present time. Even the light from the sun takes 8 minutes to get to your eye. Every time you see the sun, the image is 8 minutes old.

@Diomedene 17 күн бұрын

Of course the same applies to objects that are close, although the travel time becomes incredibly short. It also takes time for signals to travel the nervous system so everything that we see, hear, feel, smell or taste is being perceived as it was in the past. We never really know what the present is like.

@rlciii 16 күн бұрын

So we’re told. I’m not saying the wrong you and I don’t have the equipment to verify the information given. I’m OK with the trustee but let’s not take all the scientist for more than 60% of what they say… on a sidenote thanks to Apple for shittiest voice to text ever. From now on I’ll just type what I wanna say because it takes longer to edit apples inconsistencies to actually type my own words…rant sorry

@Snaakie83 16 күн бұрын

The mind blowing thing for me is that even though it has travelled for billions of years, for the photons...of which light exists...no time has passed.

@pddaawwgg 16 күн бұрын

That is bonkers to think about.

@AttackChefDennis 15 күн бұрын

Since the advent of telescopes, we have been looking at things in the sky. With technology advancing came the ability to plot where galaxies actually are when the light left them.

@Paul_Allaker8450 13 күн бұрын

To try and understand differences in number sizes I always remember this: 1 million seconds is roughly 11 days 1 billion seconds is 32 years! 1 trillion seconds is 31,000 years!! Mind blowing 🤯

@OneAndOnlyZekePolaris 10 күн бұрын

What's 1,000 seconds?

@Paul_Allaker8450 10 күн бұрын

@@OneAndOnlyZekePolaris 17mins

@OneAndOnlyZekePolaris 10 күн бұрын

@@Paul_Allaker8450 100 million nanoseconds?

@matpitch-id3pp 7 күн бұрын

You can split a single second into ~10^44 units... making a human life expexctancy lasts around 10^51 plank units

@OneAndOnlyZekePolaris 7 күн бұрын

@@matpitch-id3pp Is that smaller than a nanosecond?

@dwood21851 18 күн бұрын

I don't think that people argue the whole alien thing correctly. I don't think the argument is whether aliens exist, it's whether they have visited Earth. Just because there may be a planet with intelligent life on it doesn't mean that they have the ability to travel the universe. And even if they did have the ability to travel the universe, it doesn't mean that they would come to this planet.

@johnnehrich9601 18 күн бұрын

And they, and we, may not last that long relative to the time even for light to travel between the two. Only since about 1900 have we had the technology to use radio waves and we are still a long way from actually traveling any significant distance. Not even 1-1/2 century compared to a galaxy over 13 billion years. (150 vs. 13,000,000,000 years) With luck, our civilization will hold, but we may yet destroy ourselves via nuclear war, run-away climate change, an unbelievable natural catastrophe like the Yellowstone volcano, a sufficiently big meteor strike, radiation for a too nearby supernova, or who knows what. We may not even be able to comprehend other intelligent life if we were to find it. Imagine say something like a beehive where the individual bees, like the individual neurons in our brain, are not intelligent, but the system as a whole is. On the other hand, the study of abiogenesis (origin of life) is suggesting more and more than atoms just self-assemble into ever more complicated compounds. We have found the various components such as amino acids on meteors. Basic life may be invariably present in any spot in space with the right conditions.

@hexenwulfen 18 күн бұрын

you read my mind

@Richard2003 18 күн бұрын

Interesting in that the multitude of UFO sightings have occurred since the first nuclear explosions.

@HRConsultant_Jeff 18 күн бұрын

And if they had that kind of technology, we really don't want to meet them as they are so far advanced from us and would not be biologically based as travel and radiation limits many of those groups. It is more likely that a group would reach us by mechanical means.

@timradde4328 18 күн бұрын

If they have the ability to visit here then they are smart enough to avoid here too.

@robbob5302 18 күн бұрын

The Hubble telescope unlocked the story of the universe for us, in ways never possible before. It turned the lights on in a giant mansion, where previously all we had ever seen was a tiny corner of a closet.

@4thlinemaniac356 18 күн бұрын

False Naradigms @ Mauro Biglino & The 5Th Kind & Mars Anomilies & Beyond channels @ the final days channel @ sci Fi world channel Kazarians video

@nightfangs2910 15 күн бұрын

Very good analogy 🤟🤟😎😎

@kylereese4822 7 күн бұрын

The James Web Telescope is unlocking even more of the Universe.... and it`s replacement is on the drawing board already.....

@kylereese4822 7 күн бұрын

I`m not the only one to think that Star Ship by SpaceX is the physical limit of rockets when the larger gen 3 is operational... The next logical jump has to be bringing Enterprise type Star Ship on-line by using the raw materials from retired SpaceX Star Ships...

@4thlinemaniac356 6 күн бұрын

@@kylereese4822 @Mauro Biglino & The 5Th Kind & adam1414 & Mars Anomilies & Beyond channels.

@Ozai75 14 күн бұрын

Arthur C. Clarke once said this about if there is other intelligent life in space. "Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying."

@shanepye7078 18 күн бұрын

How do we know all this? Observations of the Cosmic Microwave Background, various captured light and measuring its red and blue shifts, x-ray observatories - many different spectrums, the behaviour of galaxies relative to one another and measuring the gravitational wells, ect.

@mikeg.4211 15 күн бұрын

And most obviously, you would think, telescopes.

@ruub9971 15 күн бұрын

@@mikeg.4211I hope that was a joke because..

@mikeg.4211 15 күн бұрын

@@ruub9971 because plain old visual telescopes which he didn’t mention are irrelevant? I’m supposed to guess at your intellectually stunning point?

@welrod94 14 күн бұрын

@@mikeg.4211I mean it's a good question! We couldnt even get a good picture of the moon or Mars for a very long time but we know what is millions of years from us. We dont even know what's in the bottom of our lakes and oceans but we know what's way out from us. I ain't saying it's a lie or anything I'm just saying it's a good question. Also said they use "wiener filtering" to help them😂

@WookieWarriorz 14 күн бұрын

a good couple thousand years of human progress haha

@jxchamb 18 күн бұрын

Scariest part of the size of the universe is that fact it's always growing. Just trying to fathom the size our our galaxy is hard enough.

@tommc3622 15 күн бұрын

That, and the fact that it works in reverse. Down to the quantum scale, we don't really know how small things go... or what happens there. ... "Size" is a terrifying word. ... Imagine the size of the universe from a quantum perspective.... it hurts the human brain.

@_Mikekkk 14 күн бұрын

Yes, and we will never know what is beyond observable universe because space is growing faster than speed of light. And anything beyond observable universe can not interact with us, even gravitation, because it is also limited by speed of light. So it does not matter if there is anything or not.

@JD43232 13 күн бұрын

You have no proof that its growing, your science doesnt even have proof for gravity or real pictures of earth from space. You are just believing stories......its just sciencefiction.

@autohmae 12 күн бұрын

What is also true, most what we see is not there anymore, because light took this long to get to us.

@TonyM1961 8 күн бұрын

Not JUST growing, but doing so faster than the speed of light and still accelerating. Even if we were to develop a light speed engine, we could travel forever and never find the edge of the universe

@MrDeadstu 16 күн бұрын

This is why it is important to fund scientific research, all this information was compiled passively using a variety of telescopes and just observing and writing notes. One of the latest telescopes, the James Webb Space Telescope is basically breaking some theories because we can see further and in different wavelengths better than ever. The JWST is not on Earth though, it's not even orbiting Earth, it's way far away and orbits the Sun around 1.5 million miles from Earth. It's images are amazing.

@Lokken918 14 күн бұрын

Always bothered me the US didn't build the largest particle accelerator. They could have dwarfed CERN if they wanted to.

@esaedvik 14 күн бұрын

@@Lokken918 IMO better to share the costs. Same goes for new forms of energy production like fusion reactors that are being built larger and larger atm. They will affect us all, I hope.

@goldenageofdinosaurs7192 13 күн бұрын

It’s also important to fund & push for top notch education in our schools. We’re doing our country an incredible disservice by screwing over our schools.

@TonyM1961 8 күн бұрын

@@Lokken918 How can we know for sure that they haven't and just never told anyone? How many decades did they manage to keep even the existence of Area 51 secret before even a hint got out? Area 52 (for lack of a better term) could easily be built as a large underground complex that is compartmentalized in such a way that precious few would ever even know what was being built. They might think that all they are doing is building a modern version of Cheyenne Mountain if all they ever see is just the section they are working on and told that the complex is a new, more reliable bunker for the government in case of attack. Stranger things have happened

@yorkieandthechihuahua 14 күн бұрын

As Monty Python sang, "So remember when you're feeling very small and insecure, how amazingly unlikely is your birth. And pray that there's intelligent life somewhere out in space because there's bugger all down here on Earth!"

@real_lostinthefogofwar 18 күн бұрын

A trillion is a lot, a trillion seconds is 31,000 years

@Snipergoat1 15 күн бұрын

Closer to 32K years but lets not quibble over a millennium or two. After all what is 32ish billion seconds between friends?

@real_lostinthefogofwar 15 күн бұрын

@@Snipergoat1 I rounded down for simplicity, it got the point across

@Vlasko60 Күн бұрын

Wow. That puts it into perspective.

@teddtarr 18 күн бұрын

"We are a way for the universe to know itself." ...Carl Sagan (from an episode of 'COSMOS')

@4thlinemaniac356 18 күн бұрын

Never A Space Agency Sagan is a school @ Mauro Biglino & The 5Th Kind & Mars Anomilies & Beyond channels @ Jenny Constantine channel Year Of the Dragon video.

@4thlinemaniac356 18 күн бұрын

A Schill paid to misinform @ Spacebusters channel NASA Fan Boy questions #1-#15

@aleisterdenven 14 күн бұрын

Satellites are a hoax as well.The Earth is an Encapsulated World/Environment.The Celestial Bodies are All visibly and factually small and they orbit around inside The Earth.There is no room or place for any Satellites.Again there are many Land Towers,which use Electromagnetic Waves or Radio Frequency Waves to create,generate,copy,redirect and transport signals/vibrations All-across The World.Satellites are completely unnecessary.The Ruling Dark Powers use Balloons,Airships,Airplanes,Gliders,Helicopters,Rockets,Drones and Land Towers to survey,map out,record and/or broadcast Everything.It is much more easier and far more efficient to use Balloons,Airships,Airplanes,Gliders,Helicopters,Rockets,Drones and Land Towers to survey,map out,record and/or broadcast Everything instead of Satellites as Balloons,Airships,Airplanes,Gliders,Helicopters,Rockets,Drones and Land Towers are much more closer to The Ground and The Earth and thus:the connection itself is far more closer,faster and clearer.To My understanding creating,building and launching Hundreds,Thousands or more Satellites into Outer Space is incredibly foolish,dangerous and life-threatening.If they ever fall down from the sky,they would be like falling missiles to people.People would be like walking targets.If Satellites truly existed,they would be extremely unwise and unsafe.If Satellites are real they would eventually become too overcrowded up there.Overcrowded Satellites would make Outer Space Travel extremely impractical,uncomfortable,risky,dangerous,fatal and lethal.A Cosmic Wall of floating Satellites would create a Prison World with a Cosmic Minefield - A Barricade of Satellites.People would effectively be trapped on their Own World unable to escape.Sooner or later those same Satellites will fall down if they don't have constant energy/power.If Satellites truly existed,Cosmic Space Travel as We know it would be Impossible or Suicidal.Satellites are a hoax designed in order to convince The Public that Outer Space is real.Satellites don't exist! Gravity is not real either.Just think about it.Water cannot be bent.Water is always perfectly level.It does not curve.Water is always Flat on the surface and it can Never be otherwise under any circumstance.If Gravity truly existed and was a fully functioning Force it would be severely limiting,restraining and restricting.According to My knowledge and intuition if Gravity was real it would function like a "Super-glue/Mega-glue Force" perpetually holding Everyone and Everything glued to the ground like Granite.There would be no jumping off the ground,no jumping Creatures,no flying Creatures,no flying Insects,no flying Birds,no Air Travel,no Balloons,no Airships,no Airplanes,no Gliders,no Helicopters,no Rockets,no Drones,no Space Travel,no Satellites and no Spaceships.The sheer "Pressing Power" of Gravity would prohibit,force and ground Everyone and Everything to the ground Forever.Nothing and Nobody would ever be able to leave the ground or to get off the ground Ever.Everyone and Everything in existence would only be able to move Horizontally.Vertical Travel would be Impossible and extremely painful,because of "The Enormous Pressing Force" from Gravity.Everyone and Everything would be Eternally weighted down by Gravity.There would be no escape.Gravity is a false theory designed in order to convince The Public that Outer Space is real.Gravity doesn't exist! Outer Space doesn't exist.Earth is the only World there is.There are no other Physical Cosmic Worlds out there and there is no Infinite Cosmic Spatial Vacuum Void.Outer Space has "3 Enormous Problems":Problem 1 - Survivability - Cosmic Space is completely and inherently uninhabitable, inhospitable and unliveable.This doesn't seem/feel right.If Outer Space truly existed it should therefore be completely and inherently habitable,hospitable and liveable.If Outer Space was real it would be 100% welcoming of All-potential Beings,Creatures and Life-forms.This means that Outer Space must be "Breathable",because otherwise Everyone and Everything would immediately and perpetually suffocate and no Life-forms would ever emerge or survive in such a lethal Cosmic Universe.Problem 2 - Cosmic Travel - All-vehicles must push "Something" in order to move and go "Somewhere".In Earth's Atmosphere Automobiles push "Air" to move,Airplanes also push "Air" to move and Cruise Ships push "Water" to move,but Outer Space has no Atmosphere.You cannot travel to/in Outer Space,because The Vacuum of Space neutralizes All-pushing power/travel power.This means that Space Travel is impossible,that No One has ever left The Earth,that No One has ever traveled to Space and that every single Space Mission from the beginning to today is a lie.If Outer Space truly existed it would need to have an "Atmosphere" in order for Outer Space Travel to be possible.Problem 3 - Vast Separation - Celestial Space is just far too tremendously vast as a territory.All-Life-forms are separated,because of the "Humongous Distance" between them.This is not convenient.If Outer Space was real it wouldn't be so gargantuan,because it has to be much smaller and more "Tightly-Knit",so that All-potential Life-forms can locate and discover each other.Outer Space is a lie designed in order to convince The Public that Extraterrestrial Beings exist.The total "Inhospitableness" and "Unfeasibility" of Outer Space proves that Outer Space cannot exist,because Outer Space doesn't exist!

@marklane58 9 күн бұрын

I'm glad you mentioned the ant. They are tiny cleaners that come to work for free then silently leave when they’re done. They are as much a part of the consciousness of the universe as we are. Respect life, our planet and each other. Thanks for your reaction, I love it. Maybe next we can do consciousness, quantum physics or time? And will it all lead back to music in the end?

@paperbagfilms 14 күн бұрын

To quote Jeff Goldblum, in Jurassic Park - “Life finds a way.”

@darkzer0670 10 күн бұрын

You could've thrown in at least 3 "Uh's" in that quote.

@Vlasko60 Күн бұрын

The weeds in my yard prove that.

@GravelBone367 18 күн бұрын

Mankind it’s been mapping the stars for centuries. The Aztec mapped the stars using reflection Ponds. The ancient Egyptians mapped the stars. Early physicists like Galileo and Newton. Greeks named all their Gods after the constellations. And you have modern technology, like infrared, telescopes radio telescopes the Hubble telescope. We were looking at the sky for a long time that’s all I know so much about it already.

@laierr 12 күн бұрын

The moment i realized you truly cannot comprehend the size: that ant argument. The difference between us and ants are really insignificant even on our solar neighborhood level. The best comparison I ever came across was: If you shrink the scale of the universe so the Sun would be the size of a marble, the next closest star would be about 400 kilometers away. It's about the distance from Dallas to San Antonio. Or more than the distance from London to Paris. Two marbles. And pretty much nothing in between. So yeah, we and ants are on the same scale in that sense.

@TheRAYviewYT 14 күн бұрын

Imagine a microscopic organism thinking it was king of the universe. For humans, it’s about the same comparison

@rxlxviii 18 күн бұрын

The Hubble telescope did a lot for our knowledge of the universe. They measure the distance using redshift paralax, supernovae, and other techniques. . However, they must also account for the gravity of all objects, which bends light. So as you can imagine, there are a lot of complex calculations in measuring how far things are away. With computers, these calculations became faster.

@dracoargentum9783 6 күн бұрын

Think of the discoveries that James Web will grant us!

@elvwood 14 күн бұрын

Fun fact: Carl Sagan's Pale Blue Dot speech is quoted in its entirety in a very unusual piece by Nightwish which is almost entirely orchestral.

@perryedwards4746 18 күн бұрын

telescopes treacle, galaxy's appear as stars, and you can see how far away, by their red shift and many other things, but it's our telescopes

@hardware20x 13 күн бұрын

Keep in mind, just 100 years ago we were still riding horse drawn carriages for transportarion completely oblivious as to what was outside our solar system. Huge advancement in technology has happend in the past 80 years or so. Now is a good time to be living in the whole history of our existence, as we witness these advancements in realtime.

@Ranganation Күн бұрын

100 years ago was WW1, the first car was built in 1885. But i totally get your point though. in the last 100 years technology has come so fkn far

@T_Moros 17 күн бұрын

Beautiful. As an astronomy enthusiast I love to see their reactions to these types of videos. They can also see the most powerful objects in the universe. I love it.

@captainshakesbeard2453 16 күн бұрын

Haha! Mrs Barbell was totally mind-blown.

@GatorNick 17 күн бұрын

Here's a good analogy of how big those numbers are: It would take you just over 11 days to count 1 million seconds. It would take over 31 years to count 1 billion seconds.

@didierleonard7125 13 күн бұрын

Another one? You remind when he talked about cosmic inflation in the video ? This cosmic inflation expended the universe from the Planck size 10~43 meters to the size of a basket ball in 10-33 of a sec, while since then the universe only reached roughly 10exp25 meters in diameters in 14 billions years… ( at least the observable part of it)

@Arrowflynn1897 18 күн бұрын

The one thing that has always intrigued me, is that there are more stars in the universe than grains of sand on the earth.

@jxchamb 18 күн бұрын

Yup. Speaking of that. These two should listen to Every Grain Of Sand by Bob Dylan.

@Kaddywompous 16 күн бұрын

WAY more in fact.

@Arrowflynn1897 16 күн бұрын

@jx maybe they will if they read your reply.

@Arrowflynn1897 16 күн бұрын

@Kaddy you just way more intrigued me. Now I wonder if all those stars came together as one, how huge would that be?

@christafart4202 13 күн бұрын

I'm not hating on them or anyone else but it's amazing that there is a group of people that don't know this basic knowledge. But also good that these videos are out there for people to discover it for thr first time.

@RoadDoug 12 күн бұрын

The educational system is a farce these days. It should be common knowledge.

@lamaglama6231 11 күн бұрын

I think there are far more people not knowing this than people that do. I also wish more people would have the time and the desire to learn but I am already grateful if they at least not fall for conspiracy theories.

@Calamity_Jack 8 күн бұрын

@@lamaglama6231 I agree. IME, the majority of people are only mildly interested in what lies beyond the visible sky, but not enough to really dig into it. For some people, though, the subject is absolutely fascinating and they learn all they can about it. I wish that ratio was flipped and the majority of people were interested in the sciences. I suspect our world would be a lot more peaceful and advanced. I guess a more modest wish would be that people not actively disbelieve science and instead believe in conspiracy theories.

@nadjasunflower1387 7 күн бұрын

@@lamaglama6231 umm...because no conspiracy theory has ever been proven right ??? lol the only thing a conspiracy theory needs in being proven truth...is time. Don't get me wrong...there are some truly wonky ones out there. Those are the ones / kind I'm really hoping your referring too. Because there are others based solidly in facts, but then big brother steps in and tells us " that's not how it happened. " then they spin up their media machine to correlate and drive that narrative. If that's not enough, they then spin up the disinformation machine (US has been going this for years, since the 50's when it comes to UFO's)to disseminate BS so that when it's proven false, the rest of the population goes...oh, well that's just bunk then right ? *clickes ignore button* which is what they in the end want. the more you ignore, the more they get away with.

@robbob5302 18 күн бұрын

When I was a small child, I had a stuffed animal I believed came to me from the most distant planet, orbiting the most distant star, in the most distant galaxy in the entire universe!

@GenericUsername1388 Күн бұрын

I think what's interesting about the size of the universe is that humans are a lot closer to the size of the observable universe than the smallest unit in existence, the planck length

@seansimms8503 18 күн бұрын

The key is this....humans have mastered every known wavelength of the Ultramagneted Spectrum, from UV to infrared we have telescopes and sensors that employ all these energies which have different properties, there's a gas cloud in the way that obstructs visible light then shoot infra or uv or micro waves at it, human machines are even using subatomic particles like muons and neutrinos....photons, electrons, you name it, there's a machine using it, they even have microscopes that can image individually single atoms😅

@UltraCasualPenguin 15 күн бұрын

Ultramagneted? What machine is using neutrinos? You do know that they pass through everything like it's nothing, right? Roughly million of them pass through your body every second.

@seansimms8503 15 күн бұрын

@@UltraCasualPenguin yes, Ultramagnetic...yes, for every billion that passes through, one will react with matter, Ice Cube Observatory in Antarctica has been harvesting neutrinos for decades, Oak Island scientists were using devices uses muon detectors to see through the ground...

@neb-taui-djeser1060 14 күн бұрын

we don't shoot micro- or uv waves at something, we just detect or catch. You don't send out rays to see you receive light that comes to you if you look or not.

@seansimms8503 14 күн бұрын

@@neb-taui-djeser1060 sure we do smart guy, have you ever used a radar gun professor? How does it work smart guy? You send out energy in whatever wavelength the device uses, traveling at the speed of sound for sonar, speed of light for photonic energies, those wavelengths go out and if they hit anything of mass, those wavelengths bounce back and are picked up by your receiver🤫

@seansimms8503 14 күн бұрын

@@neb-taui-djeser1060 explain to me how your house phone works, aren't sound waves wavelengths manipulated into electronics energy and at the speed of light conducted through a landlines where's its converted back into soundwaves so the receiver can hear😂???yes, no..

@kidpoker007 18 күн бұрын

James Webb telescope can see back 14 Billion years and even further probably in the future

@robbob5302 18 күн бұрын

Technically, it can only see back 13B years. Or a little more. Nothing can see 14 billion years because, well, the universe didn’t exist yet. ☹️

@pudder68 13 күн бұрын

@@robbob5302 some now estimate it around 26.3billion now .. this is a hot topic right now

@shanemwood 17 күн бұрын

Think about how old the Earth is and how many different civilizations have came and gone. Previous life forms on Earth may have been super advanced and left already. This could've happened many times over. Mind blowing 🤯

@stevegoldy2196 18 күн бұрын

I absolutely loved your reaction, i enjoyed this one so much! You asked all the right questions and i agree that the video is so well put together and so mind blowing.

@gkiferonhs 18 күн бұрын

There are two possibilities. Either we are alone in the universe or we are not. Both are frightening.

@mikeg.4211 15 күн бұрын

A very H.P. Lovecraft thought.

@chaospoet 14 күн бұрын

Technically there is a 3rd. We're not alone but they're so far away from us we'll never know it.

@stephenochosiete9869 14 күн бұрын

4. What about if we are the first. 5. What if others were long before us. Or just missed us. 6. Where is the f@cking end of the universe? Is there a wall? Mind blowing!

@TwitchCronos100 12 күн бұрын

@@stephenochosiete9869 what would an "end" even look like, sounds impossible for there to be one, our universe is probably one massive sphere that is getting bigger and bigger since the big bang, but for something to just appear out of nowhere is also impossible to imagine, so it would just have to like infinitely go on and on in some way. It's crazy to even think about, if there is an end then how did that get created?

@XcL-Ignites 12 сағат бұрын

@@TwitchCronos100what if the Multiverse exist?

@mryorkshire3623 16 күн бұрын

The distances we are talking about are mind blowing. Light travels at 186,000 miles per second. Our sun is approx 93 million miles away and light takes about 8 minutes to travel from the sun to earth, so if the sun were to suddenly vanish, it would take 8 minutes for us on earth to realize.

@kidpoker007 18 күн бұрын

The Universe is probably teaming with life

@autohmae 12 күн бұрын

15:52 but the HUGE problem is: they are so far away, we have no way to communicate with them, if we send a message and by the time it reaches them they are gone or when they send a reply and it reaches us we are gone. Not just society as we know it, but like: the sun has gone out and the planet went dark, etc.

@stevedahlberg8680 17 күн бұрын

It seems highly likely that the vast universe is teeming with life. The problem is is that the gulfs of impossibly distant space between all of it are so huge that we are all effectively isolated from each other on that scale.

@aleisterdenven 14 күн бұрын

@controlman7490 7 күн бұрын

We also don't know how common or rare life is and even more specifically how common or rare complex lifeforms like us exist. For all we know, humans are among a very rare group of beings in the universe that are both complex and highly intelligent while the majority of other lifeforms could be microorganisms or lifeforms similar to elephants and horses, but not as intelligent as us. We just don't know.

@Ranganation Күн бұрын

@@controlman7490 Or other life forms are far more advanced than us by thousands of years and have in fact visited Earth...

@Capcomski 18 күн бұрын

On the topic of the universe, and part of it was used in the video, Carl sagan - pale blue dot is well worth a watch

@paull8722 17 күн бұрын

This video is great glad you are reacting to it

@RockinMamaT 18 күн бұрын

This was very interesting guys. Great reaction as usual my friends and Peace out 🙏 ✌️ ☮️

@raystewart3648 13 күн бұрын

HOW WE ARE MAPPING THE UNIVERSE The James Web Telescope helps out a lot, but before that, Hubble helped us map the Super Cluster and beyond. In order to get detailed maps of the entire Universe a telescope has to fix its sights on a region of space for days or weeks on end. The further away a planet or star is the more Red Shifted it become in the image. With the help of Computers (Super Computers) and now A.I mapping these still images and putting them in to the puzzle is simple. This is how we know what the Universe looks like (not right down to all the planets, rocks and rogue moons / planets) but galaxies and stars that are so large or bright (even though most stars we are viewing are now dead and gone) allows us to map out the entire Universe. That Yellow Dot is what we can see from Earth, the surface with our eyes, not what we can see via space based telescopes. The JWT will in time be able to zoom further out than what we can currently view. It will take time and it may show us that the whole Universe as we now see it is way bigger than that or it may find that the Universe which we now view is just that, there is nothing beyond it.

@cosmocassidy420 18 күн бұрын

They see the stars with telescopes like JWST but keep in mind what they see is the image of the galaxies as how they looked as they looked however many light years ago depending on how far away they are. A majority of those stars are not there anymore but the image of those stars dieing has not had enough time to reach us yet. That's why they say that when JWST looks at the sky it's looking further back in time because that's how long light takes to get to us. I love this video I've probably watched it 100 times over the years.

@slickboyd Күн бұрын

Light years is a measurement of distance, not time. Saying "light years ago" would be a wrong use of the term.

@kinjiru731 17 күн бұрын

The size of the universe to me all but proves that alien life exists out there, but it also all but excludes any possibility they've ever visited Earth because of the distances involved to travel to Earth.

@martincampbell7774 11 күн бұрын

People sometimes talk about traveling outside the universe, but if the outside is travelling away from us faster than light, it is something we will probably never do. Our universe is essentially a bubble and we are bound within that bubble. Nonetheless, given the universes probable size, we have more than enough to explore with worrying about going elsewhere.

@JuandeFucaU 17 күн бұрын

"how do we know....." learning and observing helps.

@robertrushing9990 3 күн бұрын

With all of the observatories around the world scanning the skies with computers. The information compiled together shows an enormous universe.

@alexg4462 12 күн бұрын

You've looked at how big things are.. now look at how small things can be. It's just as mind boggling.

@ronlowney4700 18 күн бұрын

🌬 Dust in the Wind, All You Are is Dust in the Wind!

@Whateva67 17 күн бұрын

Toto, I have a feeling we’re not in Kansas anymore 🌪️

@robbob5302 16 күн бұрын

Like grains of sand through the hourglass, so flow The Days of Our Lives!

@heenez2397 18 күн бұрын

deep field hubble-, and now jwst -imaging, combined with measurements of ,for instance , background radiation, red/blue shifting of light, and a whole lot of other science combined, is how we put all this together

@Sm00th-0perator 8 күн бұрын

I have watched several reaction videos to this video and I LOVE to see a video where the viewers understand what is being said and think about the message of the video. Countless people just watch the video BLAA BLAA and the end for them. They are not even listening or are able to understand the 1/100 message of the video. The universe is endless to us AS far as our current knowledge of physics (and theories) and its laws is concerned (even if we can travel in a spaceship at the speed of light). We are not even a needle in a haystack. Nowhere near even that big 🤯

@cedarcreeper1859 18 күн бұрын

This is a mindblowing video, seen it before this reaction, crazy!

@wisdomplaysbtd6144 7 күн бұрын

I’ve heard claims that the theory of cosmic inflation has since been proven false, but as a theoretical astrophysicist, I’ve been researching that theory for years and even the explanation given in this video has no holes in it, it’s completely straight forward

@Jolly-Green-Steve 11 күн бұрын

15:30 Aliens must exist from a pure probability stand point but the universe is so vast and all the civilizations are so far apart with no idea where to look they will never find each other.... or will they?

@umpdaddy1 18 күн бұрын

To get an idea of the scale of space there is a great thought experiment I ran across. It just so happens that there are about as many inches in a mile as there are astronmical units in a light year. If you can imagine the distance betwee the Earth and the Sun as one inch, the nearest star is four miles away. The belt stars in Orion are about 1600 miles away.

@wisdomplaysbtd6144 7 күн бұрын

This is one of my favorite channels on all of KZfaq

@thedink5 11 күн бұрын

We're viewing some stars as they were more than 4,000 years in the past

@GregoryChew0921 Сағат бұрын

We know how things work on a local level, taking quantum mechanics out for a moment because that changes everything. But we always get the size and age of things wrong. They always seem to be larger and older than we thought possible.

@jeffmande4671 15 күн бұрын

A very good video that makes everyone crazy.

@Efferri 16 күн бұрын

It's so funny, but that's the exact thought process I had. "How can anyone debate that there are aliens out there". Great video!

@abundantabsurdity7085 12 күн бұрын

@10:29: WE CAN SEE IT! that's how we know it's there. We can literally look out and see all this stuff we will never be able to touch. Like a poor kid window shopping before christmas. The truly odd part of this is that the universe is the universe no matter which way we look. There is no such thing as a front or back of the universe. No edge. And no center. We can look back but the idea of looking forward is nonsensical.

@erniesteele3164 16 күн бұрын

Wonderful video...Thanks.

@larrybailey517 17 күн бұрын

I always think of Horton hears a Who when I watch things like this.

@subnoizesoldier2 13 күн бұрын

That photo let you know how small you really are. I think about this a lot. 5:07

@RickyC180 4 күн бұрын

Massive is an understatement but what blows my mind is what came before space..even way before the big bang, how did it all start?

@jimcomvideos 18 күн бұрын

One reason we are able to see and map out galaxies is staright. Starlight is very bright and if you go outside and look at the sun for a split second, (longer is never recommended), you might understand. Starlight is so powerful, it can travel through space for a very long time and distance.

@jornspirit 18 күн бұрын

...thanks so much, Bars and Barbells, for the range of different themes, which you react to - really love that! And yes, its incomprehensible - and this was only about space... now you can do the same about time: here we are, pottering around on this speck of dust, and proud and satisfied, if we live for 80 years or more... human history goes back, lets say a few thousand years, and after that it starts to get a bit blurry... now: the dinosaurs ruled this planet for 60 million years... compared with that, we are just like mayflies... not only in space, but also in time, we are super-fleeting irrelevant appearances, compared with the life span of rocks, planets, stars, galaxies... there's good docus and simulations to that as well on youtube! 🌈

@Lance_Arn 15 күн бұрын

How do we know ? There are these thing's called telescopes, very big telescopes. I possess 5 telescopes and what I see in my night sky is awe inspiring and very humbling.

@chappy48 7 күн бұрын

They have done sky surveys with telescopes, especially space telescopes and then they can calculate the distance each galaxy is from us given it's brightness and redshift, allowing us to make a rough map of the entire visible universe.

@guidoheuts 13 күн бұрын

For you guys wondering; "How do they know all of this?" Well it basically comes down to trigonometry and use of the laws of nature and physics. Here are the 3 main methods to determine distances in the universe. 1. Parallax Parallax is the observed displacement of an object caused by the change of the observer's point of view. Here's a fun experiment you can do yourself. stretch out your arm and put a finger up, now close one eye and look where your finger is compared to the background, now open the eye and close the other one. When you do this in quick succession you'll see your finger jump back and fourth relative to the background. The distance your finger jumps is called Parallax. In astronomy, it is an irreplaceable tool for calculating distances of nearby stars but instead of using a finger, astronomers use the position of Earth relative to the Sun. In January Earth is on one side of the Sun and six months later, it's on the opposite side of the Sun. (remember your jumping finger) LOL Parallax enables astronomers to measure the distances of nearby stars by using trigonometry. this method is used to measure distances to stars out to about 326 Lightyears. For distances which are too large to measure using parallax, astronomers use 'standard candles'. Light sources which are further away appear fainter because the light is spread out over a greater area. If we know how luminous a source really is, then we can estimate its distance from how bright it appears from Earth. 2. Cepheid variables Cepheid variables are a special type of star with a luminosity which varies on a regular cycle. Around 1908, Henrietta Leavitt discovered that the period of the variability was closely linked to the luminosity of the star. So, if you time the variability of a Cepheid then you can predict its luminosity. And if you know its luminosity and how bright it appears from Earth, then you can calculate the distance. Cepheids are used to measure the distance of galaxies out to about 98 million Lightyears. Cepheids are what Edwin Hubble used to determine the distances of “nebulae” (ie. galaxies) and derive the Hubble law. 3. Type 1A supernovae Supernovae occur when massive stars explode at the end of their lives. A white dwarf star in a binary pair with a red dwarf star steals mass from the red dwarf until it is too massive to support itself against gravity any more. Then its core collapses, starting a runaway nuclear reaction and a bright explosion. Because the collapse always happens at the same mass, the luminosity of the explosion is always the same. From this known luminosity we can estimate the distance. Supernovae are very bright - often as bright as all the stars in a whole galaxy put together. Because they are so bright, we can see them at very great distances, up to around 33 billion Lightyears. The disadvantage of supernovae as standard candles is that they don't hang around - you have to spot them when they go off, or shortly afterwards.

@StefanVeenstra 12 күн бұрын

There's a website scaling just our solar system to the moon being only 1 pixel. And it encourages to scroll to find the next planet from the sun outward. You'd need a few minutes to scroll the entire thing, but it gives a pretty accurate impression just on how much space is between these bodies we call our neighbors. And that's just one solar system.

@thomasgrover3223 16 күн бұрын

Great reaction ❤

@JohnRandomness105 12 күн бұрын

The nice thing about the one little speck, is that if anything comes toward us from outside the solar system, it's going to miss us unless it's been designed to approach the sun closely, and then find something. 10:20 Many telescopes of many types have been used to map out the sky, and astronomers have done hard work in charting the sky. The distances were perhaps the hardest thing, but triangles served for the closest things, certain stars serve as standard bulbs on one scale up to (say) 100 million light years, and certain supernovas are standard bulbs on a much large scale, out to billions of light years. 11:20 The objects emit light on their own, and we detect the light. The light has properties such as its spectrum, and the intensity we detect. Certain stars vary regularly in their intensity. We know what they are like, including their true power emission. We measure the intensity we detect, and use the known power emission to get the distance. 13:00 It's this point where I think cosmologists are making a certain mistake, but until one knows enough to understand the smaller scales and how the astronomers of the 20th century (and earlier) figured out the distances and discovered what they discovered, I'm not going to attempt to explain it. 15:40 I agree, based on the sheer size, there have to be many life forms, and some small fraction of them must have developed the intelligence to invent things, observe things, and figure things out. 16:10 Our theorizing includes understanding the laws of physics, and also the observations of our telescopes. Here's one way to imagine the distance to Pluto and the distance to Proxima Centauri (the closest star). Think of the trip to Pluto as a two or three mile walk. The trip to Proxima Centauri would entail departing the southernmost tip of Argentina, walking north through South America, Mexico, the USA, Canada, and Alaska, traversing the strait to Russia, walking through Siberia, crossing the Himalayas (where Mt. Everest is), going to Saudi Arabia, and South through Africa down all the way to the tip of South Africa. Here's another thing: once it was discovered what stars were like, it was discovered that the sun is an ordinary main-sequence star.

@danwatson171 12 күн бұрын

10:26 imagine a snapshot, analysing every bit of light that is currently striking earth from their sources no matter how far away. The distant universe displays its existence through our local space-time, but is spatially correct given the temporal lag through distance.

@513morris 12 күн бұрын

They use telescopes, people.

@gawdlike4075 11 күн бұрын

If you think this video is even halfway entirely accurate you’re a fool most of this is just speculation based on our galaxy and even then none of it can truly be proven beyond a certain extent

@johndeeregreen4592 10 күн бұрын

Land-based telescopes have been the major tool in discovering what exist in the universe. Much of this only came about in the early 20th century by Edwin Hubble. Before then, they though the galaxies they were viewing in their telescopes were nebula within our own galaxy. Edwin Hubble devised a method of measuring a specific type of variable star in the Andromeda galaxy. This method resulted in showing the Andromeda galaxy was actually 2.2-million light years away, and not within our galaxy. With galaxies further away, they measure the doppler effect, where an object moving away will take the visible light and shift it furth toward the red part of the spectrum. Even with an amateur telescope in a dark backyard, people can view galaxies over 100-million light years away. So, yes, we have the equipment that created this knowledge of the universe and help map it.

@cookiemonster2299 6 күн бұрын

Pale blue dot video is always worth a watch.

@Short_Round1999 2 күн бұрын

So, by using out satellite telescopes we have in orbit, they pick and track a single point of light. Then, by using whatever computer programs NASA has they can tell how far it is and plot it on a 3D map taking its distance and position is based on the Earth. They can also analyze the light composition and tell if it’s a star(and what type), if it’s a galaxy, nebula, black hole, anything really. So, as far as mapping, imagine the inside surface of a dome, that’s the sky as we see it; take the x and y coordinate of a spot of light and plot it, then using the distance(measured by analyzing the light from the object) they create the 3D maps they use in the video

@richardcarbery7035 11 күн бұрын

we've taken endless "photos" on earth and above earth at patches in the sky that because of gravitations lensing, show us what exists beyond our own system. Best way to wrap your mind around it, is studying red and blue shifting. Light tells you not only what matter exists but what that matter is made up from.

@alicestevens8291 16 күн бұрын

I used to have try and do calculations for potential intergalactic travel in school. Like say for example calculate a probable boarded flight from Earth to Andromeda and then break down how much fuel and the shelf life of organics and so on. For a day or two after everything around me would seem distant, ironically, and I would still be staring off into that void. The message: "We are all so unbelievable small but you shouldn't worry because all that means is that there is so much left out there for us to discover together." Or maybe? When problems seem too big to see over remember they are actually much smaller than our minds make them appear to be.

@rafaelnussi2001 17 күн бұрын

We know this because of our understanding of how light behaves when traveling astronomical distances, being influenced by the distortion and enlargement of the universe, light is a type of radiation, and photons are also stretched along with the expanding universe . As it stretches, the waves also stretch and their frequency changes and this influences the color we see of these objects. Redder objects are further away, the redder, the further away. By calculating red we can tell the distance to that object.

@428chase 17 күн бұрын

The James Webb Space Telescope is a space telescope designed to conduct infrared astronomy. Its high-resolution and high-sensitivity instruments allow it to view objects too old, distant, or faint for the Hubble Space Telescope.

@brunlin6629 17 күн бұрын

How do we know about the Superclusters? We can see everything in the Observable Universe. We have two very powerful telescopes in orbit around our planet....The Hubble telescope and Webbs Space Telescope that helps us see The Observable Universe. Hence the name.

@chrishoopengarner2940 12 күн бұрын

The state of West Virginia uses the worlds largest Radio Telescope currently ! It’s sits in Green Bank WV , part of the national No Radio Frequency zone ! The skies are insanely dark for where it’s sits on the eastern side of the United States, the area ranks as a Bortle 2 “ zoning for light pollution “ the lower the number the darker the skies.

@willfromyadkinville 18 күн бұрын

i love this!

@carlday3538 12 күн бұрын

Mind blowing .. puts in to perspective just how small we are ..

@rientsdijkstra4266 3 күн бұрын

Very good question: how they know all this? The answer: scientists are able to do many kinds of fancy measurements and computations on the signals (light radio waves, etc) we receive from the universe where the principles of Relativity, red shift, gravitational lensing, and all kinds of other stuff etc. etc. are used to obtain information out of the light that reaches us and our telescopes. Basically: lots, and lots and lots of measurements, lots, and lots and lots of computation!

@dakrisis 7 күн бұрын

All we know about the observable universe is done with huge arrays of telescopes and large scopes in space (Hubble, JWST). There's a huge difference between what we can see with our eyes and with those specialised telescope systems. We don't send probes out or use any sort of radar systems. As soon as you're talking about lightyears, those kinds of methods go right out the window. We observe the universe by capturing light, but the farther out the objects are the older the light we see from it is.

@johnnehrich9601 18 күн бұрын

The ancients of Greece and Rome were able to calculate the diameter of the earth by measuring the angle of the sun at two spots a know distance a way. If you then take into account the curvature of the earth, you can then use same method to figure out the distance to the sun. Each such measurement is built on the backs of the previous one and checked and rechecked. (The different moon landings left behind mirrors so you can measure the time it takes for a beam of light to travel to the moon and back.) I'm a bit rusty on some of this but the people who study this are not. (Just type a question like this into Google and you will get tons of answers.) Once we figure out the diameter of the earth's orbit, we can use that for a baseline with the angles each star is, at the extremes of the orbit. There are a bunch of stars called Cepheid variables that vary in brightness depending on their magnitude. This gives us a standard brightness for each and if we compare that to the magnitude we see here on earth, we can figure out how far away these are. Again, every time we come up with some info, it is checked and checked and checked again.

@Jolly-Green-Steve 11 күн бұрын

10:50 A telescope in space can only see so far with visible light. It can "see" or detect a lot further with infrared spectrum. That is how they can see and name stuff outside our galaxy.

@randyheiser5367 22 сағат бұрын

The thought of no end to space is mind boggling. If there is an end to space, what is on the other side?

@steveames5797 8 күн бұрын

Universe mapping is done by detecting the light that reaches earth. Not the other way around. Because the universe is so old light has had time to reach us from incredibly long distances.

@hoon_sol 9 күн бұрын

How we know? The answer is actually fairly simple: telescopes. That and a whole bunch of thinking about what we're observing with them, but ultimately it comes down to telescopes. Great invention, some of Galileo's earliest observations already gave us a ton of information about our own Solar System.

@davidwebb4451 15 күн бұрын

We can use telescopes to see the ancient light emitted from remote galaxies. Deciding whether a galaxy is part of the local group or part of a bigger structure such as a supercluster though depends upon us not only being able to see it but being able to work out how far it and other galaxies in that structure are from us (and hence how close galaxies are to each other). For relatively close objects, eg stars in our galaxy, we can measure the parallax (The slight difference in the angle to the star when we observe it at different points in the Earth's orbit eg observing six months apart). Using this we can use trigonometry and our knowledge of how big the Earth's orbit is to calculate the distance to the star. Unfortunately for the longer distances to other galaxies the difference in the angle is too small to measure so we have to find another method. Fortunately the parallax method allowed us to measure the distances to stars in our galaxy and to notice something about a certain class of stars known as Cepheid variables. These stars brighten and dim over a repeating period and the length of that period corresponds to how bright that star actually is. This calculated intrinsic brightness can then be compared to how bright the star appears to us and like viewing a standard candle at different distances allows the distance to be calculated from how much dimmer the candle light appears to us so we can use the Cepheid variable stars in nearby galaxies to calculate how far they are away. For more distant galaxies we need a brighter standard candle than Cepheid variable stars and rely on type 1a SuperNova explosions. In parallel to this we know that galaxies outside the gravitationally bound local cluster are receding from us as the universe expands and can measure the resulting red shift in the light from those galaxies the size of this red shift is also related to the distance of the galaxy via the Hubble constant providing another way of calculating distances to these galaxies (However we have to be careful with such calculations since the expansion rate of the universe has varied throughout the history of the universe with the expansion initially slowing because of gravity and then more recently speeding up due to the action of the mysterious dark energy.).

@nickwaslen698 15 күн бұрын

We know this because of telescopes. Telescopes rule all!!

@louisrobitaille5810 2 күн бұрын

10:46 The capabilities of our technology? We made a radiotelescope the size of the Earth. It's neither a joke nor an exaggeration. I think it's the Event Horizon Telescope, the one scientists used to image the black holes. Basically, by synchronizong many telescopes around the globe through very complicated maths, we managed to make them all behave as one huge antenna, literally the size of the Earth. Edit: Dr. Becky Smethurst (on KZfaq) made a video about it and many other things relation to asteophysics and astronomy. She has a PhD about galaxy stuff (I never remember what it is 😅).

@oldeskul 12 күн бұрын

There are a vast array of telescopes, both on Earth and in space that we use to observe the universe. Some are visible light, some are infrared, some are X-ray, some are radio, some are microwave. As our technology advances, our ability to observe things across the universe improves. Just think about the discoveries the James Webb telescope has made, some of them have completely flipped our understanding of how matter, energy, gravity and the like work completely on its ear.

@oliverfoldager291 8 күн бұрын

There is a video like this one that looks at how the future of the universe will unfold and how it will end. Its really cool and its called ‘Timelapse of the future, a journey to the end of time’.

@nickdoe7770 13 күн бұрын

So, how do we know! We don't have to send probes out to see things, we just need to let the light come to us here on Earth. We know exactly how light in general behaves because we don't need stars to study it, we can do that right here at home. Properties like how the intensity of light varies with distance, optics, etc. The light you can see with your eyes is part of what's called the electromagnetic (EM) spectrum. Light has properties as both a particle and a wave, so light of different colors has different wavelengths. These are very small distances, like between 400-600 nanometers or so. However, the EM spectrum has more than just visible light: there are microwaves, x-rays, radio waves, infrared. All these things are the same thing, just at different wavelengths. Composition: When you shine light on an element, each element will absorb different wavelengths, and emit others. So when we look at the wavelengths coming off the elements, we can see each one has a signature, it's own unique fingerprint (emission/absorption spectra). So when we use the big telescopes to collect the light from stars and analyze their spectra, we can tell the elemental composition of that star, by looking at which wavelengths are shining the brightest and what patterns they match. This is how we know what they're made of. Velocity: We know what they're made of because of those emission spectra for each element, but these patterns are actually shifted. We know it's the same spectra for the elements because of the patterns they form, but they're shifted because of what's called the Doppler Effect. To describe the Doppler Effect: Imagine yourself standing on the side of a road, and an ambulance drives by. When it's heading toward you, it's sirens will sound higher pitched, and when it's driving away from you, its pitch sounds lower and lower. That's because as it drives toward you, the sound waves are moving with the ambulance, so the sound waves are being compressed and therefore have a shorter wavelength, and sound higher pitched. The opposite happens when it drives away, stretching out the wavelength of the sound wave, lowering the pitch (again, from your perspective). The same thing happens with the light from the stars. These emission spectra fingerprints show signs of this stretching or compressing, called, blue-shift or red-shift, depending on if the star is heading toward or away from us (if it's moving laterally from our perspective, we can just look at telescope pictures to see it moving to the side). So from this, we can tell not only if the star is moving toward or away from us, but how fast as well (the size of the shift from where it should be). This is how we determine velocity. Distance: This is actually the trickiest. There are two methods mainly. First is for closer stuff: it's basically just drawing big triangles and doing the math. The Parallax Method. Take note of where the star is in the sky during June. Measure the teeny tiny amount it moved in December. Do the trigonometry with the big triangle you just drew, angles and the base length (diameter of earth's orbit around the sun), etc. But for when things are too far for this method, you have to look for Standard Candles. A Standard Candle is something we know already very well how bright it is supposed to be. So if we see it happen far away, and we know how bright it SHOULD be, and how bright it ACTUALLY looks, we just do the intensity math and find the distance. So we find our Standard Candle in the universe to be a certain type of star dying and exploding, and this explosion (called a supernova) is what we know how bright it SHOULD be (from seeing them pop off so much and it being confirmed based on math and physics calculations matching observations). So when we look at a group of stars we're pretty sure are in the same galaxy, we just look for a nearby supernova of the right type, and do the math. This is how we determine distance. It's been a while for me, so I may have gotten some small details wrong, but I'm pretty sure that's the gist of it. Lots more I'm leaving out and don't even fully know about

@edwardt1941 17 күн бұрын

Great thing to put up on your channel. like Sam says the scale of the thing is Bonkers

@EdmontonRealEstate01 16 күн бұрын

If there is life, one of the reasons we’ve never contacted another intelligent life form is because intelligent life is currently rare and the vast distances between intelligent life forms under almost all circumstances is vast and therefore contact is an extremely rare occurrence if it currently happens at all or ever will.