Gamma-Ray Bursts: Crash Course Astronomy #40

Рет қаралды 1,192,877

Күн бұрын

Gamma-ray bursts are not only incredible to study, but their discovery has an epic story all its own. Today Phil takes you through some Cold War history and then dives into what we know. Bursts come in two rough varieties: Long and short. Long ones are from hypernovae, massive stars exploding, sending out twin beams of matter and energy. Short ones are from merging neutron stars. Both kinds are so energetic they are visible for billions of light years, and both are also the birth announcements of black holes.
Check out the Crash Course Astronomy solar system poster here: store.dftba.com/products/crash...
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Chapters:
Introduction 00:00
Gamma Ray Bursts and the Cold War 00:45
Where Do Gamma Ray Bursts Come From? 3:26
What Causes Gamma Ray Bursts? 6:11
Kinds of Gamma Ray Bursts: Long and Short 8:35
What Would Happen if a Gamma Ray Burst Hit Earth? 10:24
Review 12:53
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PBS Digital Studios: / pbsdigitalstudios
Follow Phil on Twitter: / badastronomer
Want to find Crash Course elsewhere on the internet?
Facebook - / youtubecrashcourse
Twitter - / thecrashcourse
Tumblr - / thecrashcourse
Support CrashCourse on Patreon: / crashcourse
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PHOTOS/VIDEOS
Nuclear Bomb Images via Wikimedia Commons:
Operation Upshot Knothole en.wikipedia.org/wiki/File:Op...
Ivy Mike en.wikipedia.org/wiki/File:Iv...
Castle Bravo en.wikipedia.org/wiki/Castle_...
Upshot Knothole GRABLE en.wikipedia.org/wiki/File:Up...
President Kennedy signs the Limited Nuclear Test Ban Treaty en.wikipedia.org/wiki/Partial... [credit: Wikimedia Commons]
Vela www.losangeles.af.mil/shared/m... [credit: USAF]
The Crab Nebula www.nasa.gov/multimedia/image... [credit: NASA, ESA, J. Hester, A. Loll (ASU)]
Solar Flare www.nasa.gov/mission_pages/sun... [credit: NASA/SDO/AIA]
Gamma Ray Burst svs.gsfc.nasa.gov/cgi-bin/deta... [credit: NASA/Goddard Space Flight Center Conceptual Image Lab]
Four ALMA antennas on the Chajnantor plain www.eso.org/public/images/alma... [credit: ESO/José Francisco Salgado (josefrancisco.org)]
Gamma Ray Burst 970228 www.spacetelescope.org/images... [credit: Andrew Fruchter (STScI), Elena Pian (ITSRE-CNR), and NASA/ESA]
HST/STIS Image of the optical afterglow of w:GRB 970508 en.wikipedia.org/wiki/GRB_970... [credit: STScI/NASA]
Black Holes: Monsters in Space www.nasa.gov/mission_pages/nus... [credit: NASA/JPL-Caltech]
Naked-Eye Gamma-ray Burst Model for GRB 080319B svs.gsfc.nasa.gov/cgi-bin/deta... [credit: NASA/Swift/Cruz deWilde]
2008 GRB www.nasa.gov/images/content/21... [credit: NASA/Swift/Stefan Immler, et al.]
GRB Data www.nasa.gov/images/content/13... [credit: NASA]
Imagine two massive stars born together as a binary star chandra.harvard.edu/photo/2005... [credit: NASA/GSFC/D. Berry]
Colliding Binary Neutron stars chandra.harvard.edu/resources/... [credit: NASA/D.Berry]
Black Hole Devours a Neutron Star chandra.harvard.edu/resources/... [credit: NASA/D.Berry]
Eta Carinae en.wikipedia.org/wiki/Eta_Car... [credit: Jon Morse (University of Colorado) & NASA Hubble Space Telescope]
WR 104: A Pinwheel Star System apod.nasa.gov/apod/ap140603.html [credit: P. Tuthill (U. Sydney) & J. Monnier (U. Michigan), Keck Obs., ARC, NSF]
Swift HD Beauty Shot svs.gsfc.nasa.gov/cgi-bin/deta... [credit: NASA/Goddard Space Flight Center]
Swift's 500 Gamma-ray Bursts svs.gsfc.nasa.gov/cgi-bin/deta... [credit: NASA/Goddard Space Flight Center]

Пікірлер: 1 100

@Slaphappy1975 8 жыл бұрын

"Gamma Ray Bursts are the birth cries of black holes being born." Just about the coolest statement I've heard this year.

@junayED. 5 жыл бұрын

luckystriker me too 🤘

@cymoonrbacpro9426 5 жыл бұрын

luckystriker Cool, maybe? But it is wrong, have you ever heard of TGF , terrestrials gamma rays flashes, they are generated by lightning on earth. A terrestrial gamma-ray flash is a burst of gamma rays produced in Earth's atmosphere. TGFs have been recorded to last 0.2 to 3.5 milliseconds, and have energies of up to 20 million electronvolts. It is speculated that TGFs are caused by intense electric fields produced above or inside thunderstorms! So you see , you don’t need a supermassive black hole or high Gravitational field! All you need is plasma in a high electrical field potential. so let’s not be too naïve!

@IzaakCha7 8 жыл бұрын

Love this guy, he is so passionate

@aresgalamatis7022 8 жыл бұрын

+Isaac Chay And much better here than that ridiculous universe series which has humiliated so many scientists with their horrible editing choices.

@bodiesscienceofi6053 8 жыл бұрын

+Isaac Chay totally agree!! I wished we could be as good!

@Heinskitz 8 жыл бұрын

+Isaac Chay It pains me to think that the series is coming to an end. Phil's definitely passionate and a great communicator!

@chimkinNuggz 8 жыл бұрын

you want him to make passionate love to you?

@jonn_mace_80_95_ 8 жыл бұрын

+Heinskitz Hopefully, we'll see Phil again sometime in the not too distant future when CrashCourse comes up with a new series revolving around another branch of Science or probably something else altogether.

@zacharykrawczyk3942 8 жыл бұрын

Nothing like getting 360 no-scoped from halfway across the universe.

@SanguineThor 8 жыл бұрын

comment of the century haha

@Sheckyize 7 жыл бұрын

Universe: Meet me on rust Us: rage quit

@Zaluskowsky 6 жыл бұрын

lol

@Zaluskowsky 6 жыл бұрын

Nice one !

@REDPotriats757 5 жыл бұрын

😅😅 2 years later still most savage comment

@coolhammas 7 жыл бұрын

That Wyoming joke was awesome xD

@deborahhanna6640 4 жыл бұрын

You forgot the word 'NOT'.

@novameowww 4 жыл бұрын

@@deborahhanna6640 "That not wyoming joke was awesome"?

@c.i.demann3069 8 жыл бұрын

Without a doubt, this is my favorite Crash Course series. I friggin' love it.

@danieloneal7137 5 жыл бұрын

I’d love to see Phil get his own “Cosmos”-type tv show! I think his enthusiasm could turn a lot of people on to astronomy.

@SexualPotatoes 8 жыл бұрын

I look forward to these every week.

@KevinAuKarimAduh 8 жыл бұрын

Me too!

@dadeskr 8 жыл бұрын

+Sexual Potatoes Me too, they've become a friday coffee break tradition :)

@wietse8987 8 жыл бұрын

+Sexual Potatoes Well who doesn't ;)

@WildRiverTom1 8 жыл бұрын

+Sexual Potatoes This is the best science feature on KZfaq. When this run ends, I will start over with number 1 :-)

@mrobusto1010 8 жыл бұрын

+Wild River Tom I hope it never ends.

@ChallisVenstra 4 жыл бұрын

How did I miss this for 4 years? I’ve loved every episode.

@JASONJJL3285 8 жыл бұрын

If we see a GRB that is 6 billion light years away, does that mean it happened 6 billion years ago and we are just seeing the light now?

@dkmg 8 жыл бұрын

yes sir!

@ASWAJA2023 6 жыл бұрын

yes exactly sir we we see the past but we don't see the present because it is too far away,taking up to thousands-light-years away

@matthewflorio2705 5 жыл бұрын

Yep.

@infinitedeathloop5517 5 жыл бұрын

@Zain Mazloum that's if traveling the speed of light

@princessbuttercup8954 5 жыл бұрын

Yes

@Twosocks42 8 жыл бұрын

Thinking of GRBs as the cries of a newborn black hole just gives me chills. 0_o

@Novenae_CCG 8 жыл бұрын

+Twosocks42 One of those really high-pitched banshee screams that we use to instill horror. Scary stuff, but you can't look away...

@gabriel83571 8 жыл бұрын

+Twosocks42 Yup, considering there could be hundreds of black holes born every second...

@TIMEtoRIDE900 8 жыл бұрын

+Gabriel Turturea Well, if there's really 100 Billion Galaxies, that's still a small number.

@pyroqwerty 8 жыл бұрын

+Gabriel Turturea *every day, not every second

@ChrisLuigiTails 8 жыл бұрын

The sound he used while saying that was the scary thing

@Qazmaxier 8 жыл бұрын

so the GRB is the real Death Star?

@zachruhl6008 8 жыл бұрын

+Qazmax pfft the Death Star cant even compare.

@kitsunekyubino9345 8 жыл бұрын

+Qazmax Kind of. The radiation... so much energy... it would effectively cook your cells to death, and would be powerful enough to pass through a good chunk of the planet, so more than half the world would be affected. Depending on the strength and size of the beam, it may affect the whole world. The Death Star, on the other hand, produced a super-laser that would destroy a planet... more destructive, less energy efficient, less likely to backfire and cook the staff.

@OzixiThrill 8 жыл бұрын

+Roberta Tallienne Actually, if you take into account the range of the Death Star, it seems quite likely, that it was far less powerful... I mean, assuming that our Sun went GRB on us (Can't happen and would likely miss us, but that's not the point), chances are, our planet would turn into plasma in a heartbeat...

@TheSuperCanucks 8 жыл бұрын

je suis

@kitsunekyubino9345 8 жыл бұрын

Good point, Ozix, however, the Death Star's superlaser can't be gamma rays, because then the radiation would kill all the technicians near the beam, or at the very least give them cancer.

@toastynotes 5 жыл бұрын

Last episode: The distance to the farthest galaxies is mindbogglingly ginormous. This episode: Here are bursts of light so powerful we detected them in the 60s on accident across that distance.

@EbyKat 8 жыл бұрын

"Wyoming?" This made me laugh so much. 😊

@EbyKat 8 жыл бұрын

Also that noise at 8:23 😋😆

@zamane1234 4 жыл бұрын

EbyKat When did he say that?

@MarcelloSevero 8 жыл бұрын

10:52 Euuuueuueeuuueheheh!!! -Phil Plait 2015

@Yojack872 8 жыл бұрын

I can't wait till next episode! I love the topic of Dark Matter! Love the series!

@aresgalamatis7022 8 жыл бұрын

+Jack Star Me too, it's less hyped and it's hard to get any decent scientific work on it since dark energy and the cosmological constant became pop stars in the mind of university geeks. Nevertheless, I am really interested in getting some idea if there are answers to look for further at the time, like what is its density distribution in galaxies in relation to the distance from the barycentre and whether the little research on the subject has tried to model it as a property of space-time, instead of following the hype and try to come up with some fancy math to explain results and make no falsifiable prediction, like string theory... which is like what degrees are handed out to student who create programming languages that are completely useless, but fun to talk about their features (aka bugs) when we are drunk.

@cbraat27 5 жыл бұрын

This is the best Crash Course episode I’ve ever seen. Perfect combo of subject, writing, acting, effects, and editing.

@sohinidutta97 4 жыл бұрын

Moral of astronomy: everything explodes 😂

@KabukeeJo 8 жыл бұрын

So, black holes are the love child of 2 neutron stars making sweet sweet love in space that results in a gamma ray flash. 10:51 = my new txt notification msg.

@aresgalamatis7022 8 жыл бұрын

+Kabuki Jo More like angry sex... and no, merging of two neutron stars is one and quite rare way for black holes to forms. Most of them form from the gravitational collapse (commonly and erroneously referred as death) of massive (about over 3 solar masses) stars. And to be honest I have not checked the literature since university on updates on how the ones in galactic barycentres form.

@coltonwilson5345 8 жыл бұрын

Sex that would result in the biggest blast in the universe...damn, hope it was worth it...

@Twosocks42 8 жыл бұрын

+Kabuki Jo The fact that their climax entails the release of gamma rays makes that some rather powerful coupling indeed.

@KabukeeJo 8 жыл бұрын

Talk about an explosive climax!

@IvanLendl87 4 жыл бұрын

So the GRB is the money shot??

@MetalPcAngel 8 жыл бұрын

8:23 10:52 Seems like someone had a little sad and scared bursts there c:

@lepaca492 8 жыл бұрын

This show needs another season. Plz!!! Another season of CrashCourseAstronomy would be the best. So necessary and informative. There's a lot of other topics in this field. Do it! Plz!

@TheSignetGamer 8 жыл бұрын

witnessing the birth of a black hole... that's powerful

@JornamMusic 8 жыл бұрын

Phil, you are an amazing storyteller, even if the subject is a specific photonic wavelength. SPACE IS AWESOME!

@jeffmckeown023 8 жыл бұрын

GRB's and gravitational waves are the two most mind boggling subjects and my favorite subject to research (I very loosely use this term) on KZfaq. My mind barely let's me comprehend. Thank you for this video.

@pseudonym9667 4 жыл бұрын

You gave an overview of your video at the end! I looooove it!!!

@DanThePropMan 8 жыл бұрын

I just love this series so much.

@ianalvord3903 8 жыл бұрын

These episodes keep getting more and more scary.

@novameowww 4 жыл бұрын

Eh, it's space. I mean we were all gonna die eventually it's better to be fascinated on exactly how and when you'll be forgotten

@cj-seejay-cj-seejay 8 жыл бұрын

The universe is so huge you just know that somewhere, in some distant galaxies maybe, there have been planets with intelligent life that have been wiped out by one of these GRBs :/

@dahulius 8 жыл бұрын

somehow, I always forget that these come out om tuesdays, and I'm always pleasantly surprised when I get notified of a new episode. I love it!

@kitsunekyubino9345 8 жыл бұрын

+dahulius It's Thursday.

@dahulius 8 жыл бұрын

+Roberta Tallienne I hate tuesdays and thursdays...english not being my first language, I always confuse them....

@coltonwilson5345 8 жыл бұрын

Same me, only I constantly check my feed...😅

@totalunknown513 8 жыл бұрын

me: "hey look miniladd posted a fallout 4 video!" *then looks to the next video down* "A NEW CRASH COURSE ASTRONOMY?!?!?! ALTKJNSDTL;KJM;LYKJM.LKTMYA;SdkJTA;KLJYLKMAYLKM"

@Yojack872 8 жыл бұрын

+Total Unknown Me too lol

@trevorthompson6155 8 жыл бұрын

I made a little pee.

@totalunknown513 8 жыл бұрын

wat

@EvanRustMakes 8 жыл бұрын

+Trevor Thompson LOL

@brucewayne795 8 жыл бұрын

+Total Unknown Lololololol

@Pur3FrakTure 8 жыл бұрын

These episodes are always the highlight of my day. Phil, you are an amazing Astronomer and a great person!

@treelonmusk8324 5 жыл бұрын

8:22 made me laugh so hard, Phil is awesome😂

@robertethanbowman 8 жыл бұрын

Everytime a GRB rings a black hole gets its wings!

@spindash64 8 жыл бұрын

Have a cookie

@garethdean6382 8 жыл бұрын

+robertethanbowman If I shout 'I don't believe in black holes' does a black hole evaporate away?

@m_riatik 8 жыл бұрын

bruh

@killerbee2562 8 жыл бұрын

+robertethanbowman well got it's wings million of years ago.

@robertethanbowman 8 жыл бұрын

+Gareth Dean No one is getting the reference to "It's a Wonderful Life" where Zuzu says "Every time a bell rings an angels gets its wings"?

@benzarzycki5720 6 жыл бұрын

I really love these videos! And apparently Phil really loves Hawaiian shirts! Keep up the good work!

@eugenio5774 8 жыл бұрын

I absolutely LOVE this show!!! is so interesting, I cannot wait for the next one! :D

@dscrive 8 жыл бұрын

Just wanted to say thank you for creating such great content. the crash course channel is in my top 10 youtube channels, and as a lover of the skies and believer in human expansion into space, I am greatly enjoying the astronomy series.

@ambujkn 5 жыл бұрын

Vow! This is definitely Phil's the most "High Energy" burst presentation of all. Enjoyed it immensely. Funniest statement "The Swift satellite sends coordinates down to earth so that more telescopes on the earth can join in on the fun" ... this was funny! Keep making more videos, Phil!

@MikeOxiner 7 жыл бұрын

"What would happen if one were nearby?" "Well, not good things!"

@s4ntacz710 5 жыл бұрын

This chanel is AWSOME

@Hecatonicosachoron 8 жыл бұрын

GRBs are the most strange set of phenomena! Also the map of the gamma-ray sky is one of the most enthralling results of modern astronomy!

@sandrabotero2206 4 жыл бұрын

Just discovered this.... and I am sooo in love with this course and the passion of this host!!!

@binky2819 8 жыл бұрын

2:03 "Vela" in Spanish means "sail", not "watch". Also, 26 people lost a quarter in Wyoming.

@turki_wz 8 жыл бұрын

I need to go lie down now.

@Jake_masta 6 жыл бұрын

you made my day!

@deborahhanna6640 4 жыл бұрын

Coke is a helluva drink.

@zamane1234 4 жыл бұрын

Why?

@alannar.8701 8 жыл бұрын

Can this series never end? Please? I mean, space has no edge (dude no edge), so you'll never run out of material!

@Piffsnow 8 жыл бұрын

OMG How do you guys do to make every episode better, more interesting, and more mind blowing than the one before ? I regularly have goosebumps watching this show, and I love that. :)

@PichanPerkele 8 жыл бұрын

I'm very trigger-happy with dislikes, but I can't begin to comprehend, what kind of person would dislike this. Also, I don't know if I said this already in some other video, but Astronomy is better than all the other Crash Course channels combined. I have never seen astronomy or even science taught in such enthusiastic and narrative manner!

@steppahouse 7 жыл бұрын

I looked askance at "Cold War 'paranoia'", but not enough askance to dislike it :) He puts out great content.

@moustachio05 5 жыл бұрын

Perkele!

@robertandersson1128 7 жыл бұрын

Thank you very much for making this video! Wow, Phil, you make everything sound amazing, cool and awesome because you are so passionate about space! Yeah, I guess GRBs are really fascinating. Personally, I am more interested in the processes that form them than the rays itself. I did not actually know they are from supernovæ and neutron stars collisions and I certainly never had heard the word ‘hypernovæ’ before. Cool. I though GRBs was background radiation from when the Universe formed. If not, what really is background radiation? Microwaves? Anyway, thank you very much for making this video! The next episode will be far more darker...

@segamegadrive3903 8 жыл бұрын

Genuinely look forward to these videos :D

@GuilhermeKunigami 8 жыл бұрын

It's so amazing that gravitational waves are used to explain why two neutron stars won't orbit each other forever and they just observed this phenomena for the first time a few days ago.

@joser9237 8 жыл бұрын

Vela actually means Candle. Watch in Spanish is Ve or Mirar

@kitsunekyubino9345 8 жыл бұрын

+Jose Rosas Well, mirar is the infinitive to look. Ve I think is I am looking, or I look. I'm not sure about that one... actually, isn't that veo? Yeah... maybe it's he/she/it looks? Or the past tense I looked? I don't know....

@ghostkiller2125 8 жыл бұрын

+Roberta Tallienne Ve is the imperative form of the verb but it's not used too much beacause you can confuse it with the verb go in it's imperative form.

@franug 8 жыл бұрын

Vela can be candle, sail, or a form of the verb to watch (example in context: "A: Pedro, viste la película?", "P: Todavía no", "A: Vela, es muy buena")

@Cuix 8 жыл бұрын

+Fran Ugalde Right, but then it's not "watch", but rather "watch (her / feminine noun)", and it certainly wouldn't be pronounced "veeluh".

@dliessmgg 8 жыл бұрын

+Rauron He can't help pronunciation, he's an English speaker.

@AndsenPhren 8 жыл бұрын

Can't wait for the episode on dark matter :D

@katiefoster3047 8 жыл бұрын

My grandpa worked as an electrical engineer on the Vela program and I interviewed him for a school project once. Thanks Crash Course Astronomy for sharing the impact that the Vela program and my grandpa had on science. All I knew before was that they never detected any nuclear bombs.

@jamesfarrell8339 6 жыл бұрын

Every time I watch one of the your videos I say that is my favorite one but this time you have out done your selves . Incredible.I will have to watch this video numerous times just to be able to absorb all of the facinating facts.Thank you for putting this video together.I learn so much information every time I watch and it really is facinating.Greetings from Atlantic City New Jersey USA

@vxidwvlkxr 8 жыл бұрын

20 dislikes are probably televangelists who don't believe in space .3.

@davidjoffe-hunter7016 8 жыл бұрын

+Kyle Watts Not believing in space must be one of the saddest thing in the universe

@vxidwvlkxr 8 жыл бұрын

David Joffe-Hunter Indeed.

@m_riatik 8 жыл бұрын

+David Joffe-Hunter truly

@dkmg 8 жыл бұрын

haha! right!

@JeebusChrist 8 жыл бұрын

Not believing in our lord and saviour phil plait is the saddest thing of all

@garethdean6382 8 жыл бұрын

Quick Phil, what's SWIFT's detection level? It's over 900!

@thegamingassassin454 7 жыл бұрын

Phil: WHAT 9000! THERE'S NO WAY THAT CAN BE RIGHT!

@riel1674 5 жыл бұрын

Phil Swift

@Shadrio 8 жыл бұрын

I'm going to be incredibly sad when this series ends :C The enthusiasm that Phil brings to these videos is awe inspiring.

@jestx101 8 жыл бұрын

This is my favorite CC series, and I teach AP World History and AP US History... Love me some John Green, but Phil is the man.

@headrockbeats 8 жыл бұрын

This episode escalates rapidly.

@keterpatrol7527 5 жыл бұрын

4:15 but Wyoming doesn't exist (only joking)

@JonathanFord9398 8 жыл бұрын

yess finally been waiting for this

@DarkAngel71180 7 жыл бұрын

These are the best astronomy videos out there. I really appreciate his detailed and easy to comprehend explanations.

@greekpapi 6 жыл бұрын

Seema, I found some other good ones!! Check this guys page out. He is an outstanding instructor!! kzfaq.info/get/bejne/fs1-fdqYl62tg6c.html

@DarkAngel71180 6 жыл бұрын

greekpapi well, thank you so much! I can't wait to check them out!!! 😊😊😊

@Damstraight68 8 жыл бұрын

QUAZER, BLAZAR are those not words, anymore.?

@unvergebeneid 8 жыл бұрын

+Damstraight68 "Blazar" is a word, "quazer" is not. "Quasar" is one, though. Why are you asking?

@aaronphillips402 8 жыл бұрын

+Damstraight68 Yes there are, they are not the same thing as GRBs but are very similar.

@unclvinny 8 жыл бұрын

It's worth mentioning that whenever we see a GRB that's a few billion light years away, the event happened a few billion years in the past; GRBs were much more common in that era, as I understand it.

@notboredpanda 8 жыл бұрын

This video is fascinating. One of my favorites so far.

@hgrewal3151 8 жыл бұрын

As always great video!

@Vikas.03 8 жыл бұрын

iff the GRB's position was detected to be 7 billion lightyear that means tht GRB Happened even before the earth was born? isn't it ? or i m interpreting wrongly

@eleni852 7 жыл бұрын

vikas tiwari I was thinking the same, but I don't know

@locngoduy1571 7 жыл бұрын

Yes. You weren't wrong. That GRB happened ~3 billion years before Earth

@Suburamo15 8 жыл бұрын

the hulks video bascially

@ColinBeirne 8 жыл бұрын

Might be the best episode yet! Truly amazing.

@DStrormer 8 жыл бұрын

Thank you so much for these videos. They're one of the highlights of my week.

@SirNeutral 8 жыл бұрын

The gamma ray bursts are trying to communicate! Quick, to the Devil's Tower!

@blalolblalol 5 жыл бұрын

It's the first day at school fellas....

@no_more_free_nicks 7 жыл бұрын

Thank you for this great explanation of the bursts.

@austincarterismahomie1533 8 жыл бұрын

I like his passion and energy and how he explains everything. I feel as though I gained so more knowledge than I ever have in school, in just a matter of minutes. Also he makes it more interesting perhaps it could be the fact that I often wonder about the universe so i'm more fascinated in it all.

@Warhero1171 6 жыл бұрын

The universe really doesn't want life to exist.

@lucho93062 8 жыл бұрын

Vela actually means candle, or sail.

@fredfredburgeryes123 8 жыл бұрын

+Luis Camilo Mira means "look" if I remember correctly.

@lucho93062 8 жыл бұрын

Pikuseru I was talking about the word "vela"

@garethdean6382 8 жыл бұрын

+Luis Camilo It would also be the 3rd person singular conjugation of the "-ar" verb "velar" meaning to stay up or figuratively "to watch over", "to keep vigil over&" or "to safeguard". Which makes more sense/

@lucho93062 8 жыл бұрын

Gareth Dean Yea that's right, but if you just say "vela" people will only understand it as either a sail, or a candle, not as a verb.

@garethdean6382 8 жыл бұрын

Luis Camilo Ah the joys of language where you can have a pair of socks and a pair of pants and yet only have three items of clothing.

@boredtolife323 9 ай бұрын

"In case you're wondering, YES THIS IS PRECISELY WHAT MY NIGHTMARES ARE MADE OF!"

@user-lb2cz6yv7f 8 жыл бұрын

This is really one of the best episodes of the course!

@thegrassyknoll7792 4 жыл бұрын

Still in my mind, the most incredible about the universe, is that it has created life, and making it able to look back at itself...agree?

@NikolajLepka 8 жыл бұрын

DUN DUN DUNNN

@nercopolis99 5 жыл бұрын

LOVE this series

@prizepig 8 жыл бұрын

Thanks for the great vids, Dr. Phil!

@WonderfulAkari 8 жыл бұрын

Is it weird I feel that astronomy is the most spiritual of all fields of study? I mean I know I'll get a lot of hate if I admitted I'm someone who believes in both God and science, but I do and I feel like the more we understand space the closer we are to God. which is funny because I think people would expect the opposite.

@coltonwilson5345 8 жыл бұрын

It's astronomy that makes me believe Lovecraft was Jesus...just my opinion!

@culwin 8 жыл бұрын

+WonderfulAkari What does "God" mean though? Whatever attributes you put on your definition, they are just something made up by humans (or you). There are numerous attributes you could give to "God", so being a person of science, you have to weigh them all equally. Anything you dream up might be the true "God" since you have no evidence to support any of it. At that point it kind of becomes meaningless... it goes back to the classic argument, if God is all-knowing and all-powerful and all-good, why is there evil in the universe? Basically, you're just making things up in your mind to make yourself feel good.

@SuviTuuliAllan 8 жыл бұрын

hail Satan! \m/

@WonderfulAkari 8 жыл бұрын

Yup comments were as expected.

@LeifPeterson3D 8 жыл бұрын

+WonderfulAkari Well, You are made of the universe, and the universe made you. So, in studying the universe, you essentially are learning more about yourself. If you consider yourself to be the universe or the universe to be you, it doesn't really matter either way, because the answer is both.

@ilustrado7291 7 жыл бұрын

WYOMING????

@kaselier1116 8 жыл бұрын

Phil, every episode you become just *THAT* much more awesome!!! :D

@marksimpson5199 8 жыл бұрын

I love these episodes!!

@Carrottime 8 жыл бұрын

The "United Soviet Socialist Republic", huh?

@oreorion1 8 жыл бұрын

MOAR. seriously, I love this show. So, few questions: do gamma ray bursts push these neutron stars through space? Do gamma ray bursts propel their respective galaxies through space from these huge energy emissions?

@Alexagrigorieff 8 жыл бұрын

+q Locke The burst is symmetric, no net momentum.