I love how he put "Don't panic" at the end of the title:)...Hitchhikers guide!

@dancingvirgil

3 жыл бұрын

Neeeeeeeeerd!

Coincidentally, I'm currently visiting this supermassive black hole, but I'm staying in safe distance. However, the problem is that it messes up my upload schedule : In my timeline, I uploaded my last video two earth weeks ago, in yours it's much longer. Sorry, subscribers - I should have thought of that.

@Zerepzerreitug

9 жыл бұрын

Ooooh, that explains it then XD

@Shangori

9 жыл бұрын

Wrong place to say that, Zogg! But as a subscriber of your delightful channel, I do hope you will return to amaze us with alien knowledge

@Ghery88

9 жыл бұрын

Time dilation again Zogg? This is starting to feel as a ritual of yours, weren't you exposed to earthling culture too much?

@unclvinny

9 жыл бұрын

Please come back to us, Zogg! If you start now, you'll be back in time for Christmas.... of 3714.

@Skybird1525

9 жыл бұрын

no porblems there, Zogg. Although, Watch out for Massive Hurtling Objects and bring back some pics of your trip. Would be an interesting view.

Who was panicking? Even if we was being sucked in it wouldn't be in my lifetime, or indeed in the lifetimes of any generations I witness in my own lifetime.

@littlefrank90

9 жыл бұрын

Or whatever, it would probably not be that painful and something else would kill us before that, probably in a quick way.

@SD-tj5dh

9 жыл бұрын

I'm more concerned about what another man could do to end my life rather than what giant entity could make spaghetti out of me. As interesting as it is knowing what could happen, I'm not losing sleep about it. If anything I'm only fascinated by the scale of everything beyond our little planet, and how i wish I could witness this scale of other world's with my own eyes.

@geordonworley5618

9 жыл бұрын

It would still be pretty depressing if you knew that at least some time after your lifetime, the whole galaxy would be destroyed, along with all of its humans.

@SD-tj5dh

9 жыл бұрын

Even at the speed of light we're thousands, if not millions of years from the black hole. And the earth is moving in any direction at barely a fraction of that speed. So no, mankind will be long extinct or long moved on from planet earth before the planet becomes a serving suggestion for ragu.

@Twosocks42

9 жыл бұрын

Vadix Vadexi That's a certainty already. Whether it happens in our lifetime, our children's lifetime, or at the end of the sun's life, who could say. A natural disaster, nuclear war, etc. could all lead to end of the galaxy. Or, the sun going out will certainly take our world down.

I always assumed we were slowly being consumed by "Sagittarius A*", I'm glad I was wrong. Not that it ultimately matters the time and space are too vast to affect our lives in real-time.

@chaotixthefox

8 жыл бұрын

+BigBoss Don't worry. There is a black hole traveling at Sub-Relativistic speeds towards the solar system that will eventually destroy us free of charge.

@ShenasRI

8 жыл бұрын

Chaotix Fox Wait a second...are you talking about Donald Trump??? no wait he'd never do it free of charge, he'd totally charge us for it. So where'd you hear about the blackhole?

@chaotixthefox

8 жыл бұрын

BigBoss I was just looking up stuff about black holes and found that some black holes have been observed traveling in our(general) direction. I remember the speed since I converted it from MPH to Mach, and notices it was Sub-Rel.

@ShenasRI

8 жыл бұрын

Chaotix Fox Wow that's fascinating, I'm going to do some research on it. I've heard about "rogue black holes" that move around. But never one any where near us, but then again we can't detect everything around us so it shouldn't be that surprising.

@BigHairyFenian

8 жыл бұрын

We still could be, we might just be so far away that the amount closer we get over time is so negligible that we can't even measure it

Don't Panic ey? That would be a good phrase to put the front of a book... maybe flashing, in large bold letters..

@gigabic7487

9 жыл бұрын

Maybe on an encyclopedia?

@mikehunt3688

5 жыл бұрын

I have it imprinted on my towel, which I carry around with me everywhere.

@cassiflyn1575

3 жыл бұрын

Maybe he wants us to watch it to get more views 😂

One nitpick - the event horizon and the point where spaghettification would occur have nothing to do with each other. Though it's understandable - even Stephen Hawking once stated the same misconception. The event horizon is simply the point where the escape velocity exceeds the speed of light. Spaghettification occurs where the gravitational attraction towards the black hole is increasing so fast that there is a huge gravitational gradient across the incoming object. The odd thing about black holes is that the event horizon diameter increases linearly with mass. The gravity gradient (and the point where it is steep enough to rip things apart) has an inverse square term in it. Small black holes will therefore spaghettify objects further out compared to the event horizon while massive black holes are the opposite. en.wikipedia.org/wiki/Spaghettification#Inside_or_outside_the_event_horizon Fun fact: for a supermassive black hole, the gravitational gradient at the event horizon would be very low. In fact, a person in a well-built spaceship could theoretically survive the crossing of the event horizon and not even be aware it has happened. Of course, once past the event horizon, the astronaut's eventual doom is certain.

@danheidel

9 жыл бұрын

kilroy1964 That's incorrect for a couple of reasons. For one, you absolutely need to achieve escape velocity to escape a gravitational well. You need a certain quantity of deltaV to escape and that is regardless of whether you achieve that deltaV quickly and coast out or are thrusting the whole way. Once you are inside the event horizon, it does not matter how powerful your engines are, you cannot leave. Further, there are no stable orbits inside the event horizon so you can't even hold place. Even light will eventually spiral down to the center.

@PajamaMan44

9 жыл бұрын

So Dan, what you're saying is if I have a jet pack that accelerates me to measly 20km/h away from Earth and then only accelerates me enough to counteract gravity and friction, that I wouldn't escape Earth's atmosphere?

@Hihellohi610

9 жыл бұрын

Dan Heidel if the event horizon of a black hole is when escape velocity is equal to c, couldn't you still hold a stable orbit as orbital velocity < escape velocity for a given distance? furthermore what you can do is make a burn below the event horizon to raise your apoapsis above it (but your still orbiting it so your velocity < escape velocity and c and therefore you are not violating relativity). once you reach said apoapsis above the EH, you can make another burn to raise your periapsis above the event horizon. Once here you can make another burn to reach escape velocity which is now < c since your above the EH and viola, you have successfully escaped from beyond the EH without violating relativity. of course this will require a phenomenal amount of dV but the point is that the astronaut's doom is not certain.

@danheidel

9 жыл бұрын

PajamaMan Assuming that the jetpack has magic, infinite fuel, yes, it would. That's because it's imparted an initial deltaV and you're continuing to accelerate at roughly 9.8 m/s^2. Of course in practice, such a rocket would need an ocean of fuel but let's ignore that for now. You have to look at this problem from first principles. You're being pushed down by a constant 9.8 m/s^2 of gravitational acceleration. That gravitational field drops off as an inverse square of distance from the Earth. You have to integrate that acceleration against gravity from 0 to infinity and that gives you the total velocity you need to escape. The most efficient way to escape is to gain that velocity instantaneously since then you are wasting a bunch of thrust fighting the 9.8 m/s^2 gravitational acceleration for as short a period of time as possible. However, as long as your engine ultimately brings you to escape velocity, you will leave - it doesn't ultimately matter how you do it. A black hole has a total escape velocity greater than c. That is definitionally impossible for any material object to do. It doesn't matter how fast or slow you do your acceleration, relativistic effects make it so that it rakes an infinite amount of energy to get that deltaV.

@Bloodmuffin6

9 жыл бұрын

Wouldn't the light inside the spaceship begin traveling exceptionally odd paths once the event horizon was crossed?

I really like the intro animation for SciShow Space. It's colorful and dynamic like our existence in this universe.

I don't want my noodle to be cooked! :'0

@SrmthfgRockLee

5 жыл бұрын

im gona ask the chinese guy lulu whos confused for a woman often of ownagepranks channel if he cooks his noodle n ballsack often

You guys deserve a much greater audience!

"Huh. So if we're orbiting the sun, what's our sun orbiting? ...OH GOD, IT'S TERRIFYING" Pretty much my reaction upon first learning about host of the Milky Way Galaxy party.

@Clockworkcityofpain

7 жыл бұрын

HalcyonSerenade what if I told you that our entire galaxy (along with everything in the Virgo Supercluster) is being attracted to a mysterious something (that some scientists believe is yet a mor massive black hole) far away in the universe?

@resa2720

6 жыл бұрын

HalcyonSerenade barycenter....

@resa2720

6 жыл бұрын

Every planets in our solar system(includes the sun) orbitting in the barycenter

@idontknowatall5214

6 жыл бұрын

Our sun is not orbiting any thing as we know

@meydintorki

5 жыл бұрын

The Sun isn't the biggest boss

The 10 second explination of tidal forces in this video explained more about how the tides work on earth then anywhere before. It seems so simple to me now as to why we have tides, I don't know if you have made a video on it previously but if not please make a video on the tides and how they are created by our moon!

@davidford3115

3 жыл бұрын

Unfortunately, he conflated the event horizon with the Roche Limit. The event horizon is basically the point of no return. The Spaghettification point he described where objects start to tear apart is the Roche limit. and around planets is where an orbiting moon will disintegrate into a ring.

What about the people that don't believe in black holes? Do they feel the gravitational pull of one?

@danielsmith1452

9 жыл бұрын

No the black hole just kills them first for being so dumb.

@lampshade1304

9 жыл бұрын

If a tree falls in the forest and the only person there is deaf guy, does the tree still make a sound?

@GarudaLegends

9 жыл бұрын

God created black holes

@Scanntraxx001

9 жыл бұрын

GarudaLegends Proof? plz :)

@GarudaLegends

9 жыл бұрын

Holland Novak oh ok. Let me upload the video of him creating it, because obviously i was there with my camera.

bah, humbug. next you're gonna tell me there's a skeleton hiding inside of me

@lightuk8958

6 жыл бұрын

Cuda FX There's a skeleton hiding inside of you.

@Neeraj-sz9io

5 жыл бұрын

There is really a supermassive black hole in the centre!

@Neeraj-sz9io

5 жыл бұрын

And also it inactive at the moment.

@Neeraj-sz9io

5 жыл бұрын

It will awaken during the collision between our Milky way and Andromeda galaxy.

@esagil_playz4334

5 жыл бұрын

It's true

Trust me, I have spaghettified a lot of Kerbals...

@electricpants8196

7 жыл бұрын

I love playing KSP!

@bberzamin

7 жыл бұрын

Gilian Rüsterholz long Live KSP

@SrmthfgRockLee

5 жыл бұрын

whats a kerbal

@SrmthfgRockLee

5 жыл бұрын

@@bberzamin the hell is ksp?

@SrmthfgRockLee

5 жыл бұрын

@@electricpants8196 kabel special provocations?>

You have videos on all the topics Ive been waiting for videos on and now I think Im in love with SciShow Space.... thank you

2:37 Hmmmm.... The symmetry in this model draws out an EYE!!!

Super massive black hole is not 93 million miles away. ITS WAY FURTHER

@Potatotalitarian

9 жыл бұрын

Yea, I think he accidentally used the Earth to Sun distance for that part.

@fjoa123

9 жыл бұрын

he does say its 26000 light years

@janikgerber3663

6 жыл бұрын

It has a probability of infinity to minus one of being a distance of 42 lightyears away from earth

@Near_Void

6 жыл бұрын

9112274 can I tell you bout space engine

@mariowilson730

5 жыл бұрын

A couple million au's from earth I thinm

Where's my spaghetti? Black hole: Gurp.

@TON-ou1rt

5 жыл бұрын

I'm hungry now.

@andressaenz848

4 жыл бұрын

You are spaghetti

Thanks so much, I have bad paranoia so I get worried about stuff like this but now I'm not worried at all. I subscribed and turned on the notification bell!

Great video... galactic centre black holes now make MUCH more sense.

"Here on earth the gravitational pull of a person standing 30ft away from you is 10.000x stronger than the pull of the supermassive black hole" add another 30ft and make it 100.000x when case of mother-in-law ._.

1:55 umm...isn't 93 million miles just 1 AU?

@avatar94100

8 жыл бұрын

+Eric Southard yes

@PneumaticFrog

8 жыл бұрын

One.. Australia?

@avatar94100

8 жыл бұрын

PneumaticFrog Au stands for Astronomic unit and is the distance between the earth and the sun at roughly 92.955807 miles.

@landomagnus7516

8 жыл бұрын

+MartinG. No, it is one Australia, dont lie to him bro.

@PneumaticFrog

8 жыл бұрын

MartinG. yeah stop lying

Well put sir!

Oh this sounds delightful

Just the other day I was having a conversation about the impending Andromeda/Milky Way collision and this seems like a perfect time and place to ask about it. As I understand it, most solar systems in both galaxies would pass through unharmed due to the great distances between celestial bodies. My friend insisted that the black hole at the center of Andromeda would spell disaster for the entire galaxy, but as you've mentioned in the video, at galactic distances the gravitational pull of a black hole is really quite miniscule. My question: What happens when two galaxies collide?

@Pivitrix

9 жыл бұрын

all that needs to happen to spell doom for us, is that our orbit around the sun gets put out of balance. Doesn't seem all that unlikely to happen.

@RyanMathewHarding

9 жыл бұрын

Pivitrix That would indeed cause problems, but that's harder to do than you think. Assuming Andromeda's black hole doesn't come particularly close, a star would have to come *very* close, close enough that the distance from the Earth to the sun is non-negligible in comparison. For reference, the nearest star to us is about 253,000x farther away from us than the sun. It would probably have to be like < 1,000x in order to have a serious effect.

@Pivitrix

9 жыл бұрын

Ryan Harding It always amazes me just how big and mostly empty space is. But if you look at a simulation of the crash, the galaxies are slingshotting back and forth through eachother before eventually settling down. I'd say there are pretty big forces at play there, i just have a hard time imagining our solar system being left to itself without interference through all the madness. Although it would take a very long time and isn't as dramatic as it looks like.

@marcuskaiser4770

9 жыл бұрын

Vsauce made a video about that called "what will we miss"

@flaviusclaudius7510

9 жыл бұрын

Ryan Harding There will be a huge burst of star formation as the interstellar mediums of the two galaxies collide, but largely nothing will happen - space is so incredibly empty that the gravitational interaction between stars is much more likely to fling stars out of the galaxy than collide them. The black hole will eventually emerge with the one in the centre of our galaxy, which will likely release a lot of energy, although likely not harmful to someone as far out as us.

If our galaxy is orbiting the supermassive blackhole, what is the supermassive blackhole orbiting if it's even orbiting anything at all?

@JesupBedumir

9 жыл бұрын

That's asking like what does our galaxy orbit around.

@SleepyFen

9 жыл бұрын

My best bet is that our galaxy is still flying away from the center of the universe, and that nothing yet exists that is so massive that it can force our galaxy out of course and into an orbit. Or that, if such a massive object exists, it's too far away for our galaxy to be affected by it in any significant way. It's probably possible for two galaxies to orbit one-another, or one galaxy to orbit an other, but I think the galaxies would have to be "relatively" close to each other.

@coolguyman16

9 жыл бұрын

I don't think our galaxy is orbiting anything, dark matter is just keeping everything in place so to speak (even though the universe is expanding and galaxies are moving further away from us, with the exception of the Andromeda galaxy)

@smitemus

9 жыл бұрын

It isn't really orbiting anything but it is moving towards something. "The great attractor"... but even that unknown huge mass is moving toward something with even more mass. So our "tiny" super massive black hole will eventually orbit something too.

@AngelSamael

9 жыл бұрын

galaxies form clusters which means they form groups that orbit each other but on a scale so big i have no words for it. there are some small galaxies that orbit our galaxy and when galaxies combine (like ours will with Andromeda) the black holes will temporally orbit each other but these are on the scales so huge that they are only meaningful to type 2 or 3 post-human civilisations.

Not gonna lie, this is the most informative video I have seen on yt about black holess's ins and outs. explains things such as the even horizon and why it's black. Find it strange how we don't know how the supermassive ones form

@hzkzg1614

4 жыл бұрын

Literally makes me panic!

Very interesting, thank you! It's a pity the video wasn't longer, but I understand.

as the black hole sucks up more mass, won't it eventually become larger and more scary?

@coolguyman16

9 жыл бұрын

I don't think so, the objects it sucks up are crushed to a point it would not affect the black holes size, not to mention energy is released in the form of Hawking radiation

@danheidel

9 жыл бұрын

coolguyman16 Yes, as the black hole grows in size, its gravitational pull increases. However, it's actually fairly difficult for a black hole to gain mass. They are extremely small targets for something else to hit. The vast majority of stuff around the black hole will just end up orbiting it rather than falling in.

@FonVegen

9 жыл бұрын

coolguyman16 But actually, black holes are getting scarier by sucking up things. The mass of a star that enters a black hole is not lost, and even though Hawking radiation removes bits of the black hole over time, if a stellar black hole consumes more than it loses (and it really just loses tiny amountss of itself), it gets bigger, heavier, scarier and even darker (Stephen Hawking himself said that tiny black holes (+/-mass of the Himalaya) would actually glow from their radiation.

@General12th

9 жыл бұрын

Yes, but not by much. Sagittarius A*'s event horizon is only 0.4 AU from its center. The largest known black hole, S5 0014+81, has an event horizon 1805 AU from its center. That sounds like a lot, but considering a light year is 63,000 AU, even the scariest black holes are _tiny_ compared to the size of the Universe.

@Groaznic

9 жыл бұрын

Dan Heidel But in the accretion disk, wouldn't the particles lose velocity due to their insane friction? And if that happens, wouldn't it cause orbiting mass to start falling into the hole? Btw nice to see you again :)

Please confirm: A black hole doesn't weigh more than it did before collapsing. No mass was added. Instead, the collapse means the surface sort of "retracted". Retracted so far that it sunk below the event horizon. The star which existed pre-black hole would have the same gravity at up to the surface of that star. It too would have had a theoretical event horizon, SORT OF, except the mass was distributed and not concentrated (like a black hole's is). But this "event horizon" would be inside the star, and the star's mass is better distributed, and so no physical event horizon would actually exist. Only by concentrating the mass into asymptotically high density does an event horizon form. An object orbiting the massive star at distance X would also orbit its black hole "form" at the same distance (assuming the masses don't change). This is why the new reboot of Star Trek made me scoff. Enterprise orbited an object before it became a black hole, yet once it became a black hole its gravitational pull (at the same distance) magically increased. That seems to be a physics 101 fail IMO.

@flaviusclaudius7510

9 жыл бұрын

malignor Confirmed.

@yunthi

9 жыл бұрын

id imagine a black holes mass would grow in time with more mass getting trapped inside. wouldnt explain the star trek effect tho.

@flaviusclaudius7510

9 жыл бұрын

yunthi It will grow in time, until its supply of matter runs out and the microwave background cools enough for the black hole to net radiate energy away in Hawking radiation.

@yunthi

9 жыл бұрын

was also thinkin that even if the gravity does not increase in the transformation, still solar winds would probably cease, and the matter in that solar wind would start gravitating towards the black hole. not a huge difference perhaps but still some minor change.

@hkoizumi3134

9 жыл бұрын

I am not sure if I understood your comment and if I did, I apologize in advance. There is a massive misconceptions about what gravity is. To this day, we are still trying to figure it out but I think Enstein is on a right track. Gravity itself does not pull anything. From what I understand from general theory of relativity, space and time is relative meaning they are basically different side of a same coin. When we say gravity, we are actual seeing an effect of an object with mass being affects by another object that curved the space. So in a way, objects are basically moving in an efficient straight line through a curved space. So when we talk about black hole, when an object with mass becomes a singularity, space is compressed into infinite degree. So an object going past it thinks it is going straight but actually the space is so curved, everywhere you go leads to the singularity. And I think this is where we got things confusing with "event horizon" and "escape velocity". Past the event horizon, increasing velocity does not make sense because everywhere you go will lead you into singularity. So when we say a stellar object having event horizon is kind of wrong because those object do not have a singularity where it warps space to a same degree of black hole. So stellar object do have escape velocity but not an event horizon. And black hole does have event horizon but not an escape velocity. I hope that made sense.

I love that the first picture of a black hole they showed is the same exact picture that has been my computer screensaver for months now.

Awesome video.

Vote for Pedro!

If light can't escape from a black hole, wouldn't it be extremely light in a black hole? I wonder how bright things could get?

@GweiTheLeafChild

8 жыл бұрын

+Merlyn Schutterle Nope. Even if you were conscious through the whole ordeal, you can't see the light because it's traveling away from you at the same speed you are, and once you're at the center, no light can "emit" because it can't escape the hole.

@computerkopman123

8 жыл бұрын

+Merlyn Schutterle If your flying into a black hole and turn around all you see is light being sucked in and in front ofyou its blaaack

@GweiTheLeafChild

8 жыл бұрын

If you turn around, you wouldn't see light either

@computerkopman123

8 жыл бұрын

you would. saw it on Vsauce

@merlynschutterle7242

8 жыл бұрын

+GweiTheLeafChild Maybe I should just pick my banjo and not worry about things like that.

One thing faster than the speed of light: the narrator´s speech. Bet his dying screams would escape the pull of the Event Horizon.

Happy holidays Hank.

So if black holes are just super dense solid objects, what elements are they made from that makes them so dense?

@morningmadera

9 жыл бұрын

penises ...

@MaxArceus

9 жыл бұрын

They're not exactly elements anymore. The core of a star is rather dense as you can imagine. At the end of a big star's life, there's a whole process going on that eventually causes the core to become even denser. The pressure increases, and more mass gets cramped into a smaller volume. This causes the gravity to increase, and the force to get stronger, and the pressure to get higher still. Etc. Normally there are other forces that can counter all this pressure, but if the star's heavy enough, they too fail, and the core fully collapses to within its own event horizon. Then the entire core just keeps on collapsing into itself, and the blackhole is born. The whole concept of the elements just breaks down in such conditions. We don't quiet know yet what form the mass in there will have taken after the collapse.

@TubaJay448

9 жыл бұрын

They're likely made of neutrons, but we don't know. We can't go to one.

@Tartar

9 жыл бұрын

Edit: Original comment deleted, read what Arceus said. All hail Helix.

@theworldstallestengineer3806

9 жыл бұрын

Black holes are more dense then the nucleus of atoms. So they can't be made of any elements we know of.

There is one forty billion times the mass of the sun

@TON-ou1rt

5 жыл бұрын

And I am 66 billion times the size of the sun.

@Toyota-Coaster

5 жыл бұрын

@@TON-ou1rt So how is M87 doing?

EXCELENT EPISODE 👌

God, i really love this guy.

What if you're stuck between 2 equal sized black holes?

@danheidel

9 жыл бұрын

Well, if they are the same mass and you're exactly in the middle, they would be equally pulling on you. However they would also attract each other so you'd have two black holes flying towards each other and by extension, you.

@dondonadetra

9 жыл бұрын

If they were orbiting binaries, you could float there. But if you moved the slightest bit in any one, you'd fall out of unstable equilibrium and fall towards one of them. Good luck with that:P

@danheidel

9 жыл бұрын

kilroy1964 If they are orbiting each other, yes. However, the question seemed to imply two static black holes.

@Cole.Varial

9 жыл бұрын

Dan Heidel you are incorrect. static implys they are motionless. it really depends on the distance between you and the two black holes. if they were static and not attracting eachother or attraction was ballanced by repultion or attraction in the opposite direction, if you were close enough you would be stretched in two directions due to spagettification down to what singularity remained which would stay in the middle.

@danheidel

9 жыл бұрын

yipfrr I'm not sure why you're being so sure about this. This is a purely hypothetical question and so if the starting condition has stationary black holes, it has stationary black holes. If you bothered to read my first response, I explicitly stated that they would start moving towards each other. The statement of them being static also has nothing to do with spaghettification - it was in response to kilroy1964 stating that orbiting black holes would be in a stable configuration. And you also have no basis for stating that spaghettification would occur. There is nothing in the question that states the distance between the black holes. The spaghettification radius occurs quite close to the singularity and can even be well inside the event horizon. Unless the black holes are starting quite close to each other, the tidal force on a person in the center would be tiny. Eventually, they black holes would get close enough do to a double spaghetification but at that point, both black holes would be moving at a significant fraction of the speed of light. So the spaghettification process would be incredibly brief and would probably not even finish before both singularities came crashing together.

Thanks God...

@TON-ou1rt

5 жыл бұрын

Don't thank god, thank the universe.

@Toyota-Coaster

5 жыл бұрын

@@TON-ou1rt Noice whats where your mommy little felia??

I like your presentation style

My professor discovered this black hole about 20 years ago. So cool!

Nothing travels faster than the speed of light... hmmm... thats your belief today, I still dont think it makes sense that the "endless" universe has an ultimate speed which nothing can beat, and yet this speed is so incredible slow that it would take 100,000 years to just cross our galaxy.

@dermisbakin3259

7 жыл бұрын

Torben Rudgaard dont remember how, but you may want to research why light is the fastest speed you can ever get. Something to do with mass. So yea dont have an aguement over someone else's stupidity.

@BlueRockYT

7 жыл бұрын

Torben Rudgaard An infinite speed of light would imply that all particles are massless and therefore experience no time. This means that the universe, at least as we know it, cannot exist as it would be infinitely large and it would take no time for light to travel through it as it travels infinitely fast. It just doesn't work.

@BlueRockYT

7 жыл бұрын

Torben Rudgaard And yes the speed of light is very slow relative to the expansion of the universe, which happens faster than light at large scales. Perhaps in the very distant future we can find an explanation for why all this is.

@ivosentinella45

7 жыл бұрын

Torben Rudgaard there is something faster then speed of light its called speed of dark google it

@cgaccount3669

6 жыл бұрын

Nothing is faster than light in space. But interestingly enough space itself does expand faster than the speed of light.

Oh baby don't you know i suffer, Oh baby can you hear me moan You got me under false pretences How long before you let me go? Hope you get it :)

@djr5995

8 жыл бұрын

I thought I was a fool for no one Ooh baby I'm a fool for you You're the queen of the superficial And how long before you tell the truth Freakin great song btw!!

@shyderrr

8 жыл бұрын

+DJR agree 100%

@djr5995

8 жыл бұрын

Shyderr P It's playing in my head now :-D

@TheWizardYeof

6 жыл бұрын

FINALLY I found what I was looking for

Immediately liking this video because it's finally Hanks

Nice and funny video!!

Until Andromeda comes crashing in...

@jessicacaleno1998

6 жыл бұрын

x TROLLING x in 1 billion years mate

@rafamolinadw

5 жыл бұрын

And andromeda will be eaten by our galaxy and we won’t be affected

@flopsnail4750

5 жыл бұрын

I hope we are around to detect the gravitational waves from the 2 supermassive black holes colliding. that would be way cool. probably not though...

@TON-ou1rt

5 жыл бұрын

I'll kill andromeda.

Started singing muse's super massive black hole half way through, got distracted, had to watch again to really hear

Imagine being on a planet that's in orbit just above the event horizon of a super-massive black hole... Damn it would look scary AF. Or what if a moon was orbiting a black whole, which was orbiting a super-massive black hole, and you were stood on the moon? Damn............ I wouldn't like to be there.............

@MidoriFlygon

9 жыл бұрын

there was a planet orbiting near a black hole in interstellar

@Xenro66

9 жыл бұрын

MidoriFlygon I haven't seen it yet :(

@danielsmith1452

9 жыл бұрын

I think a planet close enough to a black hole that you'd get a good view would be torn apart by the tidal forces mentioned in this video.

@troyadams19

9 жыл бұрын

MidoriFlygon Unless you're on a page that is explicitly for talking about the contents of recent movies, posting openly about them is extremely inconsiderate, so please keep stuff like that to yourself in the future.

@MidoriFlygon

9 жыл бұрын

Jordan O'C watch it. it's amazing. like compared to other sci fi flicks out there, this one's so accurate and is based on actual theories, and it never patronizes and talks down to the viewer by dumbing down scientific explanations. obviously some parts are a bit of a stretch and a bit made up to fuel plot, but still it's a wonderfully made movie.

I remember in grade school there was this kid who found out about the black hole in the center of the milky way, and they started panicking and telling everyone about it as if they were announcing the end times. I, being a kid who was really interested in space at the time and knew more about it than the average grade-schooler, sat quietly and watched as my class went into panic mode.

woke up and asked myself: What's in the center of the galaxy? well thank bro you earned a sub

I assume that the "Don't Panic" would be written in large, friendly letters if KZread allowed that.

Whew! I feel better.

This guy is the best host on the show

You should never use the comment "nothing can travel faster than the speed of light", rather nothing can accelerate to a speed faster than the speed of light. Keep the videos coming!

They’ll come out with a different theory 10 years from now

Title reminded me of 'The Hitchhiker's Guide to the Galaxy' Description reminded me of 'Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb' (not *100%* sure why that was my first thought, but ok :P) Also, the actual content was very good!

I've never said "WOW" so many times while watching a video this short.

Still wondering if they're a mass from pulling in material, did a tucked spin thing, finally causing too much gravity, super whatevering the make up of the star(s), causing a meltdown thing, causing a super nova, finally spinning even more freely, (faster than the speed of light), leaving the look as if not lit while actually being super heated and having light, being too much for standard light to escape, puling light into and/or around itself, and rip tiding it away..

相当不错！表示涨姿势了

one thing i don't get it, once you get past the event horizon the escape velocity is greater than the speed of light. so that would mean that if you'd fall to the center of the black hole your speed would be faster than the speed of light right?

One thing we’ll never know is if Black Holes are conscious or not, so I like to think of them as gigantic OG’s in space, chilling without fear.

"TON 618" to my knowledge is the largest known Black Hole in the universe at 66 billion Solar Masses. Yeah our galaxy's resident Black Hole is a freaking tadpole compared to that.

holy shit, for a second in the middle of this video i had the strangest existentialist feeling ever, as i imagined in a split second a galaxy, dazzling with lights, and then zoom into a planet orbiting an ever speeding sun, as i sit in my chair in said planet watching this video as we sling around our own black hole.

" Your noodle is essentially cooked" Yeah, I lost it there.

Our beautiful galaxy has a dark heart/centre

cool, where can I download one?

so if the velocity to escape is faster than the speed of light but they do eject jets how are the jets coming from and moving away from the center without the jets moving faster than the speed of light at some point?

The number of views in this video is so dense at this time, it stays at 301 then if it is dense enough it may explode to immeasurable numbers

"Nothing can travel faster than light." We don't fully know that.

@cliftongilmore145

4 жыл бұрын

We can only hope my friend

These space programs make me question existence

a thought just came in to my head, so you need an atmosphere or basically particles to hear sounds or for sound to travel through so if a black hole were to have a atmosphere of some kind for sound to travel around, what would a black hole sound like? i may be far off from what i am trying to say but basically i am wondering if a black hole would sound like a really low constant bass sound or maybe nothing at all i thought this was pretty cool to think about

@BatMandor

7 жыл бұрын

Christian Chaparro Well knowing that might not be possible, nothing escapes event horizon you can still (i guess) hear the accretion disk the sounds are made by em waves conversion not like physical conversion.

It seems like black holes essentially recycle galaxies matter. They are destructive but they also contribute to a galaxies size and creating new stars and matter.

Isn't Sagittarius A* supposed to Jet outward soon? I'd heard it was going to be in a few years. Also Doesn't the Crab Nebula also have a Singularity?

I subscribed for the noodle joke lol

I enjoy the way you say million.

In a different solar system closer to the center of the milky way, what is the possible effect and kind of environment if they are near that super massive black hole?

@1:53 I think we are farther from it than that. The Earth is 93 million miles from the sun.

Without a black hole, our galaxy wouldn't hold together very well.

@flaviusclaudius7510

9 жыл бұрын

TheSonicGod Why not?

@Sonicgott

9 жыл бұрын

It is the consistent gravitational pull that our galaxy circulates around. Without it, everything would be flung into the abyss.

@flaviusclaudius7510

9 жыл бұрын

Except that it only weighs about four million solar masses, while the galaxy as a whole has a mass of about one trillion solar masses. Removing one millionth of the mass of the galaxy wouldn't have a noticeable effect on objects that weren't already right next to Sagittarius A*

there is also microscopic black holes, these are harmless and we can make them with the large hadron collider

I wish I was a doggo or something so I wouldn't be able to have the capacity to think about this stuff and have existential crisis's about how insignificant I am in the Universe every time I watch a sci show video about space

OH MY GOD

ITS NICE TO SEE HOW MUCH HUMANS ARE GETTING BETTER AT DICOVERING THINGS, NOW WE NOW THERES A FASTER THING THAN THE SPEED OF LIGHT BUT BACK IN 2014 WE DIDNT KNOW.

@Dave-me3bi

8 жыл бұрын

+ingra Romanov ACTUALLY, IT IS IMPOSSIBLE FOR SOMETHING TO TRAVEL THROUGH SPACE FASTER THAN LIGHT. ITS JUST THAT YOU HAVE TO TRAVEL FASTER THAN LIGHT TO ESCAPE A BLACK HOLE, WHICH IS IMPOSSIBLE.

Good video John Green but still waiting your new book to come out

hank. Spaghettification is dependent on dg/dr (change in gravity) rather than g itself so it does not necessarily happen just beyond the event horizon. in fact, for small black holes, it can happen outside of it and for supermassive black holes you can theoretically survive just beyond the event horizon (ignoring all the high energy radiation and heat).

@flaviusclaudius7510

9 жыл бұрын

Hihellohi610 How would you survive inside the event horizon? The radial dimension is time-like, meaning that bits of you closer to the centre can't communicate at all with bits of you further out (that is, the future light cone of any object inside a black hole does not encompass anything farther out).

@davidford3115

3 жыл бұрын

Yeah, he seems to conflate the event horizon with the Roche Limit. Orbiting objects get torn apart by tidal forces at the Roche Limit, not the event horizon. Light cones in Relativity are the reason why we focus on the event horizon.

It will come to earth after thousands of years

Zog, question. if 1) nothing can travel faster than light, and 2) past the event horizon, gravity is so strong that nothing traveling at light speed or slower can escape it, then 3) how it a black hole capable of emitting energy bursts? A curious mind.

The graphic shows the earth being 93 million miles from the center of the galaxy. That's actually our distance to the sun. Like you said at the beginning, we're ~26,000 light years away. Each light year is about 6 trillion miles.

I wonder if the galaxy is so big that at this moment a whole planet full of sentient beings aware oif their plight is crossing the event horizon of a super massive black hole.

“It’s not that bad. It’s just called a supermassive black hole. Also it’s also 4millions times bigger than the sun. But don’t worry there’s ones 100million times bigger than the sun” what a rollercoaster in 1 minute

Sagittarius arm or Orion spur? Been seeing a lot of science shows alternating between those... Are they the same?

Yep I like..it

Hey Hank, why are most models of black holes 2D when they are spherical? And when visuals are shown of accretion disks forming, how come they form in a disc shape, and don't form like a shell around the black hole? And finally, where are the poles of the black hole that matter spews out of? Please help, really confused!

@Bingus_Jamz

7 жыл бұрын

probably because making a sphere all black won't project to our eyes in fact, any sphere projected on a 2d surface will appear 2d, it's not like a cube that can be shown at a good angle.

I feel like the event horizon is the horizon which light escape do too the speed it takes to leave those pulls.. but matter cant reach the speed of light so the even horizon for everything should be a lil bigger

@davidford3115

3 жыл бұрын

It is called the event horizon because anything within cannot been observed from the outside. It has to do with Steven Hawkins light cones in relativity which put constraints on the movement of knowledge in space-time. The spaghettification effect he describes and what I think you are referring to is the Roche limit.

Oh Hank, your jokes stay entertaining.

so, if the pull is greater than the speed of light, does that mean something falling into a black hole can move faster than light? What if it's light itself that traveling into the black hole? Will the light then move faster than light?

OH thanks goodness

Would be interesting to see the effect of the Ergosphere as well, rather than just the spaghetti'fication. In theory (i think) an object would appear to have a filter like cracked glass; as any spacelike object would becoming timelike with light becoming spacelike.