"be the guy who first recorded the sound" Scientist 1: Guys! Guys! i managed to record a audio black hole, and convert it to it into a range about to be heard by humans" Scientist 2: Awesome what does it sound like? Scientist 1: Ummm.... Hell?

which is the form of a black hole, a sphere or a flat hole?

or why does the black hole exert an inward rather than outward centrifugal force on the accretion disk?

@@Ezekiel903 Considering how mass works when compounded and pressured, it'd be a sphere. A hole would be something like a theorized wormhole.

@@Ezekiel903 As for why there's a disc around some blackholes, it has to do with gravity and the rate at which it is spinning. It's why the gas giants have rings, it's why the solar system is going around the sun, it's why the moon goes around the earth. All these objects are spinning at enough of a rate to influence the objects around them, but the gravity from them isn't explicitly strong enough to just outright force them into the same spatially occupied location. Same goes for blackholes. They spin, creating the mentioned discs in the video.

Not a strange concept that what you can see is centered on you. The opposite on the other hand would be very strange indeed.

I think it’s like how you can’t see the curve of the earth because of the size difference between us and the earth. Even the size of the observable universe still isn’t large enough for us to be able to discern the true shape of the total universe. More testing is recommended.

It's so strange that the point of view of everything I see just happens to align exactly with the location of my eyeballs... it must be a miracle!

@@davidva8694 There were some tests done using triangles on million light year scales (I dont know exactly how it was accomplished though, the scientific papers are beyond my level of comprehension) and there were no changes, the triangles were perfect 180 degrees. If it had a curve, the triangles would be more or less than that amount.

Haha, that's a great way to think about it! From our perspective here on Earth, it definitely feels central! But is there really a center to the universe at all? That's a question scientists are still grappling with.

Meet you at Milliways, but don't try to order salad. ❤

And let's not forget that the answer is 42.

Hey what's up buddy! Thank you!!!

Don't forget your towel. ❤

​@@julianaylor4351Towel Day is coming up, May 25!

YES SPACE WHALES!!!

It would make a good extreme metal intro tho 🥳

I heard that galaxy plans to send a probe to Earth looking for humpbacks... 🖖🏻

Where's Admiral Kirk when you need him?

Space whales? According to the Doctor, there's only one left. Cheers....

That's because we see them from so far away. Imagine looking at something that eclipses your field of view in every direction, and when you look at it, you can even see the back of your own reflection.

Except, there's no time. Only motion and attraction. If you'll ever get that close to a black hole, the grinding motion itself has already beamed you with so much radiation that you wouldn't probably even notice that you've died. Time is only human made concept to understand motion. If you understand neutron stars then the black holes ain't much different. They're just densely packed objects that spins really fast and also crushes you like a lemon due to gravitational weight. I'd say they're like one gigantic atom. Can't get any denser than than and that also explains why they can get bigger and has a mass.

I think No Man's Sky did this well, as you can only get so close to Sagittarius A before the background radiation becomes too intense, as you earn that game achievement.

To be fair, our own sun and earth generate gravity strong enough to bend space and time. Orbits are essentially objects moving in a straight line through a curved spacetime. Black holes accomplish the same but on a much more grand scale.

"gravity strong enough to bend space and time." Bend space-Time is the gravity.

Also in an infinite universe, there are infinite exact copies of everything.

@@digitalfootballer9032 and infinite copies of every possible variation as well. Although it can be assumed that most variations wouldn't be stable. Usually the systems would collapse into more chaos, until a stable form could be reached.

That also could be true of a finite universe depending on its shape.

@@adamredwine774 People who believe space is finite have the same tone as flat earthers.

@@kamron_thurmond It's literally an open question in cosmology... people who speak outside of their depth of knowledge are why there are flat earthers in the first place.

If you escape the accretion disk do you wind up with a fake tan to show for it?

​@@HeavyTopspin and a STRONG desire to fist pump!

I'd rather end up in a black hole than in New Jersey 😂

​@@HeavyTopspin depending on which side of NJ, you could end up in the Hudson which is much.. MUCH worse than a black hole

@@venomenace😆😂🤣

This is his most underrated channel, in my opinion.

​@@Marykate465Astrographics would like a word. In fact, I'm surprised this wasn't posted there, or at least given a shout out.

So therefore, there is no real center... everything is a matter of perception to us.

yeah. yawn

Keep it down will ya? 😴💤

I listen you while you're sleeping. Night night!

I can think of a few things on Earth that are scarier than Quasars.

The plunging region.

Range of no escape. Sounds like my ex 😂

I don't believe light can ever redshift to the point it flat-lines or becomes negative. All that redshifting means is that the wavelength of a photon stretches. Theoretically, the wavelengths of photons can keep stretching forever, getting closer and closer to zero but never actually reaching it. Also, photons that are too far away to ever reach us are traveling slower than ALL of the space between itself and us, but it's still traveling faster than the space between itself and other particles that are closer by. So it is only traveling slower than space relative to us, not relative to space that is close to the particle. According to one theory of the end of the universe, "The Big Rip," space could eventually expand so quickly that even space close to a photon could begin to expand faster than the photon could travel. If this is the case, no one really knows what would happen. We don't yet have a working theory to combine general relativity (the theory that predicts/describes the expansion of the universe) and quantum mechanics (the theory that predicts/describes particles like photons), so all scientists can do right now is speculate. Keep in mind I'm not a physicist, just an undergrad with a long-standing special interest in physics, so take this all with a grain of salt. That being said, I hope my answer can help! :)

They are terrifyingly destructive and to fall into a black hole would feel like being stretched apart until disintegration for what feels like eternity due to the time dilation that occurs nearer to the black holes centre. So not great

@@carlstanford7607 You'd have to actively try to get swallowed up by one. Also, time dilation doesn't work that way for you. It's not that you experience time more slowly, it's that it would seem that way to the observer. Eg. if we were traveling at near the speed of light, we wouldn't be moving/experiencing things 99% slower. PBS Spacetime does a great breakdown on how this would work with 1 person being swallowed up and one person at the event horizon, observing. The one falling in would appear to be "standing still" in space.

Star Wars richly detailed galaxy, often referred to simply as “the galaxy.” The galaxy is one of trillions of galaxies in the Star Wars observable universe. It consists of over 400 billion estimated stars and more than 3.2 billion habitable systems. These systems orbit around a supermassive black hole known as the Galactic Centre, which lies at the heart of the galaxy. The galaxy’s structure includes four major spiral arms that rotate around the Galactic Centre. These arms are: The Perlemian Trade Route The Corellian Run The Hydian Way The Rimma Trade Route Norma Cluster (Abell 3627): Located near the center of the Great Attractor, this rich cluster of galaxies lies about 68 megaparsecs 222 million light-years away. Hercules Cluster (Abell 2151): Situated in the constellation Hercules, this cluster contains around 200 galaxies and is approximately 500 million light-years away. Massive Galaxy Cluster Conglomerate (formerly Abell 3192): Originally believed to be a single cluster, this conglomerate is located in the constellation Eridanus. The M.G.C.C is a supermassive structure, which exhibits gravitational lensing effects. The Abell cluster is a fascinating collection of approximately 4,000 galaxy clusters, each containing at least 30 members. These clusters are almost complete up to a redshift of z = 0.2. The catalog was originally compiled by the American astronomer George O. Abell in 1958 using plates from the Palomar Observatory Sky Survey (POSS). I didn't know George Lucas was an astronomer or involved in the POSS, that is interesting..

🙄

@@mrhassell Umm... It's a joke. I don't think Astronomers knew about that cluster when SW came out, much less GL. I was poking at the SW dogfights and in-universe physics, and the "A long time ago, in a galaxy far, far away..." line.

@@taitano12 Idk, from the form of the comment, maybe an AI Bot is trying to strike up a nerdy conversation with you?

The bots of You Tube are loonies, it's the 🐬s that say that in Hitchhiker's Guide To The Galaxy. Get an education in classic British science fiction comedy by Douglas Adams, and leave my comment alone. 🙄 I'm definitely not inviting you to Milliways. 😁❤️

@@julianaylor4351 To quote the petunias, "Oh no, not again". 🙄

There's another dwarf planet shaped like a rugby ball. 😁

Isn't it theorized that if you are caught in the event horizon of a black hole that time will slow to a stop for you? If this is true then wouldn't it also then be impossible to reach the singularity, as if time stops for you then all movement would as well. I am sure there are other factors like being crushed by gravity or cooked by radiation, but if you somehow could shield yourself from that, would it just be a fate that completely froze you in time for eternity? That would be pretty unpleasant to say the least.

I was expecting this on Astrographics

According to ...

​@@julianaylor4351 it was a joke, based on the name of the channel you are commenting on....

@@captainspaulding5963 Obviously my joke back to you was too subtle. 😁❤️

The acceleration of the universe's expansion is a likely explanation for the 13.5b vs 93b disparity. So that really isn't a paradox.

Three stars circling the Milky Way’s halo formed 12 to 13 billion years ago. Care for another existential crisis, just for good measure?

It's not really an existential crisis. You're just not as special as your parents LED you to believe

This is one of the least existential crisis inducing side projects I've seen in awhile

@@fathertimegaming17 But we are each the center of the universe. That has to be the first ever participation trophy.

I was thinking the same thing, many red dwarves have estimated lifespans in the hundreds of billions to trillions of years.

"Daytime gets longer in the Winter and Shorter in the Summer. The longest day of the year is June 21st. This is also the First Day of Summer. So as soon as Summer starts the Daytime will begin to Shorten. The Opposite happens on the First day of Winter, December 21st." How sure you're about that? Let's say that you're in middle of a summer in Sydney or anywhere else on the southern hemisphere. What do you expect to see?

​@@XtreeM_FaiLEverything is just the opposite in the Southern hemisphere. I'm sure the OP is referring to what happens in the northern hemisphere and is probably where they live.