stars orbiting our galaxy's supermassive black hole

[EmoCactus]

Scary shit, it's what holds our galaxy together.

[rajansos]

can someone explain to me why the stars is only moving in a 2d way.

What i mean is why doesent the stars come towerd or away from the the camera or what ever is that record this.

Would be greatfull if someone could answer my questen

[Deprival100]

@rajansos only a guess but

The way you measure the movements of stars is by inferring the speed from the doppler shift, then you can plot the data in a 2d representation like the above. But good question i took it on faith when looking at this.

hope that helps

[TheRationalizer]

@rajansos

Look at the purple line at the top, that looks like it is either going away from us or towards us. They could have made it more clear by making the lines brighter or darker to indicate depth.

[TheNextLevel11]

Disclosure Project: What a success! It will be great when they start to explain the history of their own stars! Arcturus, Andromeda etc..

[derpenstein]

In terms of a black hole, the harm arises when there is a stronger gravitational pull on your feet (for example) than your head. This results in a stretching which could be fatal. Normal gravitation just pulls you towards the BH.

For a normal stellar BH of 3 solar masses the EH radius is about 9km whereas the distance at which tidal gravitation might become fatal is about 400km. For a supermassive BH of 1000 solar masses the EH is about 3000km, and you might feasibly cross that EH in one piece.

[derpenstein]

Motherfucker I know what spaghettification is. What I'm telling you is that spaghettification occurs across the event horizon and the black hole would have to be many light years across for the event horizon to be long enough to stretch your body out to a light year. And as far as I know there are not any black holes that large.

[derpenstein]

"it travels so fast light can't escape".... wha? No, it's got so much gravity light can't escape.

But seriously check your references about spaghettification. Without looking it up myself I'm almost certain that it only occurs while crossing the event horizon.

[derpenstein]

That's unlikely. For you to get stretchted out to a light year the event horizon would have to be a light year long.... that'd be a pretty goddamn big black hole.

[watsisname]

Re: tehsausage

I don't think SO-17 is actually getting as close to the black hole as those other stars are. I imagine the stars are not all orbiting in the same plane so that one might be well in front of or behind the hole as seen from our point of view.

[Dnn17halo]

sue me

[zombat]

Well any planets orbiting the other star system would likely have their orbits disrupted

[zombat]

@tehsausagelinks

Probably a matter of perspective, we'd need an interactive 3D program to see this better

[Volcanicflamefox]

I think that's why SO-17 is not moving fast when it gets near the black hole. Because it's farther or closer to us so It barely gets affected by the gravity. If there were more plane then that would make sense.

[AnimeFreakaz0id]

Errr..... So far none of them seemed to have been sucked in. Besides, thats practically impossible, a Black hole that big would collapse in 3/4ths of a second. DID ANYONE TAKE SCIENCE OR IS IT JUST ME????

[Supernova310]

ummm but the certified scientists who put out this info have... I'll listen to them before I listen to anything you say

[Titosor]

Black holes can't collapse, son. They've already condensed to a singularity with 0 volume, so there's nowhere for anything to collapse. It's just a hole in space/time as far as we know.

[shadowace421]

i thought they could, i remember googling something that says black holes, especially large ones, dont last long

[watsisname]

@shadowace:

You might be thinking of Hawking radiation, which means that black holes (very) slowly lose mass due to quantum-mechanical effects at the event horizon. Although this is more significant for a very small black hole than for a large one.

Large black holes like the one at the center of our galaxy will be around for a very long time, probably surviving everything else we know of in the universe.

[shadowace421]

yes thats it

[AnimeFreakaz0id]

@Titosor

... don't call me son.

[watsisname]

AnimeFreak: Regardless of what he called you, Titosor is correct.

Black holes are _formed_ when the cores of massive stars collapse, but a black hole itself cannot collapse any further as the center of it (singularity) has reached infinite density.

Can you elaborate about what you mean on stars not having been seen falling in, and what you are pointing out as impossible?

[AnimeFreakaz0id]

@watsisname

Acctually, they don't have infinite density, the theory is, is that it can hold alot of mass, kind of like a computer with memory and alot of saved picture. But they can colapse, I heard it about it when people were freaking out about the atom smasher creating a black hole. If it had made a back hole, it would be extremely small and colapse almost instantly.

[watsisname]

@AnimeFreak:

Er, not quite. A black hole does not "hold mass" and it doesn't really have anything to do with storage space like electronic media. 

A black hole can gain more mass by accreting material that falls into it, and it *very* slowly loses mass through what is known as Hawking Radiation, which is a quantum mechanical phenomenon occuring just outside the event horizon.

I think you're thinking about the latter, as it's an important process in small (atom-sized) black holes.

[Tumorikaxx]

come on everyone know the star crashed kyntoa after the massive exlosion of genras, it divided the magnetic field of the planets making them vulnerable to any supernatural formations in the galaxy, we are always a target to the outcome of the massive formation of black holes in space XD

[acesoverkings22]

I have a black hole in my ass anyone want to see it?

[QuestionOfTheDay2]

yall look at my video

[evilmurderproduction]

that's interesting, all the way back from 95 till now. From the looks of things SO-16 just got tossed back away from the mass. Do you think this sort of thing could inadvertently toss a star in the direction of a planetary system like ours? I mean if the star is tossed free of the gravitational influence of the black hole.

[watsisname]

@evilmurder: Most, if not all of those stars are gravitationally bound to the hole, but even if one were to escape in our direction, they are far too distant to be of any concern to us. We're a good 20 to 30 thousand lightyears from the center of the galaxy.

[derpenstein]

Don't see why not.. if an orbital ejection occurs along the correct trajectory... kablooey a few million years later.

[nezantra]

And what conjecture can the ordinary, non astrologer make from this?

[watsisname]

nezantra: I think you mean "astronomer". Quite a difference there. =P

Anyway the point of the video is to demonstrate one piece of evidence that astronomers have for the existence of a supermassive black hole at the center of our galaxy. By measuring the orbits of these stars, we can determine the amount of mass contained within that region of space.

[nezantra]

:P I'm not versed in anything to do with outer space. Thanks for the explanation :)

[bilosta123123]

this is not good way to spam

[Awesome1337Dudes]

wow i dont understand a word of this... lol and look at the comments :D smart people everywhere

[dotZodiac]

Why did SO-45 pass by it with no change of trajectory?

[eye0wnu]

Well look its a 2d diagram SO-45 could be millions/billions of miles below it or above it out of the way of the black holes influence. The stars aren't all on the same plane.

[NeVarajMe]

Comment removed by the homosexual author of this lame video

[gargoloso]

Lame video? please, this is the universe where you live. try to learn about it, its fascinating, no lame.

[BarryDennen12]

My cock is orbiting the galaxy's supermassive cunt

[flutiwaxene]

Retarded!

[leighpeter]

@BarryDennen12 hell yea get me a piece of that action

[ITMBnF]

lol

[CheemStur]

I dont get it

[erichathy222]

comment removed by author

[SLAPCHOPshamwow]

that made more sense than the health care bill

[JazztheHeadbanger]

ha ha americains have to pay for health care

[leighpeter]

@JazztheHeadbanger

Aussies don't loosers

[JazztheHeadbanger]

Man I stuffed up the spelling on that one, damn stumble upon making me rush. Us Kiwis don't either.

[chatanwarrior]

a black hole killed my father and raped my mother!!

[Tri756]

Mine too!

[ranatungadkr]

I thought I was the only one!

[TheHomelessCripple]

me too!

[GabeZTV]

i totally understood what i just saw

[plugz10]

Didn't anyone get that? :S

[segmentationfault]

Gravity fuck yeah

[bahrainTVchannel]

ok....so what?

[chulo4lyfe]

i can stop him.

[KurakinSF]

@chulo4lyfe then you will experience pain

[chulo4lyfe]

you mean like the hatians? i'm actually outside in a thunderstorm right now flying a kite that says "god doesnt exist" while saying "GODDAMMIT" over, and over.

[KurakinSF]

sucks for you your brain flushed

[chulo4lyfe]

im not the one that believes a fairy tale.

[Dnn17halo]

fuck GOD

ITS ALLAH

jk =D

[ranatungadkr]

true dat rofl

[Linnehan13]

SCIENCE!

[them413rkid]

Sigh... this is exactly why people have a problem with a big bang. The big bang implies that there is a creator, that is all. It is an implication. The only reason why the "Big Bang Theory" is so widely accepted is because it makes so much more sense than the other theories of the history of the universe.

[jessemacaluso]

its also possible that we arent wired to be able to understand it. i tend to think we are tho

[theuserman]

@nullpointer: The way to think about this as follows: Imagine a bedsheet spread out. You place a baseball on the middle of the sheet (which creates an indent in the bed). Now, when you roll smaller object around it (like say, marbles or peas) they will be drawn into the indent that the baseball has made (I'm sure there are videos that can explain this). A blackhole is sort of like having a 4000 tonne baseball in the middle of your bed.

[theuserman]

@furfinsandfeathers: No. You do not get to bring God into this. Please leave explanations for people with actual theories and facts to back them up.

@SteveArpo: Everything follows the principle of least action. We are discovering a lot of particles (most of which are rare) because of the high amount of energy being used. They aren't usually seen otherwise. And I believe this is a magnificently simple way for the galaxy to exist.

[nullpointer66]

cant understand a shit of this video... i cant help it, im not a nerd

[croog24]

it's really simple actually if you have seen at least one video explaining black holes. The star in the middle of the picture represents the black hole. The two stars (the big glowy things) that come towards it are swung around at an extremely high speed and continue on that orbit.

[ItsCoreyLynxxYall]

What are the chances that one of these stars could sling shot from orbit and come barreling into our neighborhood?

[watsisname]

ItsCorey:

Chances of that happening? 0% =P

We're more than 20,000 light years away from them and the amount of orbital energy they would have to gain to ever make it that far would be insane. :)

[SteveArpo]

I have just seen this for the first time. I would have to put in a lot of work swatting up to begin to really understand it all. The concept though of these black holes in the centre of galaxies including ours is fantastic. How does the, 'design' of the universe produce such things? It all seems over complex. Could there not have been a simpler more efficient way to organise matter in the universe? Why are there so many different types of particles? What maintains it all if anything?

[furfinsandfeathers]

@SteveArpo All designs have to have a designer... The answer to your question is simple....GOD........This is awesome but I also am just as fascinated at a blade of grass or a butterfly wing.

[watsisname]

A simple answer, yes, but doesn't come with any evidence or testable implications. I'd much rather we try to understand the science then throw our hands in the air and say "GOD DID IT". =P

[watsisname]

SteveArpo:

To be honest with you, the subject of this video isn't all that complicated. Basically, there's a supermassive black hole at the center of our galaxy and this video shows our observations of stars that are orbiting it. Look on wikipedia "Sagittarius A*" (with the asterisk) if you're interested in learning more. :)

Your other questions are pretty big -- I can't answer those in a single youtube comment. =P

[geevow]

btw, what the SO-16 fellow is doing is crazy

[geevow]

what a mess that place must be, I think we can't imagine how violent nature would be over there in the neighbourhood of that black hole

[dg4rez]

I worry more about zombies than black holes.

[VT16]

You have to think three dimensionally when viewing a cluster of stars like this. Some will be closer to the observer and therefore look like they're close to the hole in the center, even if they're geographically far away from it.

Cool video, thanks.

[MrGabimus]

in the center of the galaxy his a black hole is normaly

[bboyjtek]

by the time we get sucked alll the way in, we'll somehow develop technology to migrate :D

[narutofan01230]

Colorful.  :)

[Fellas007]

What is this? :D

[BladimirxD]

ask bitch

[lordhelpus]

i bet da black holes a real asshole for sure! shit be lick suckin the shit out of our galazy yo.

[spoocyguy]

are you high?

[LogInAnders]

@lordhelpus

Agreed. Denying black holes would be rascist and unethical.

[YourThatLemon]

Hahaha good shit.

[sargonakkad1]

@sandfish1 what the guy below me said isnt true, for a very massive black hole the mass of the other star is irrelevant to its trajectory. the reason the star yo umention is not affected as much is because it is actually not very close to the black hole, but the distance is in the direction out of the page. i.e. it just looks close because we are looking from this angle

[electronixtar]

this is awesome!

[brandonthiesen]

Do they know how quickly SO2's orbit is decaying?

[sandfish1]

Why doesn't S0-17 seem to be effected by the gravity of the black hole, considering the fact that it gets nearly as close as S0-2, I wonder?

[supergrassed]

@sandfish1 image is 2D, SO17 is possibly much further away from the black hole.

[Phild3v1ll3]

@sandfish1 It has a lot more mass and therefore isn't quite as affected as other stars.

[MiniAgupa]

The really neat thing is that it looks identical to a simulation of gravity I've written.

[486609]

awesome

[fr3d420]

Brilliant

[NekuraCa]

Very cool. I'm curious what the scale of these are, specifically what is the size of S0-2s orbit that it makes in just fifteen years. I see that it's only one tenth of an arc second, but no distance scale. Also, what is the difference between the solid paths and the dashed paths?

[UltraBibendum]

WHERE BROOKLYN AT

[deholz]

yes, this is purely observational data. it's a real movie of stars going around the galactic center's black hole, over the course of 15 years.

[dpcathell123]

is this based on observational data or just simulation ?

[MickAv8r]

@dpcathell123 Observational

[VT16]

It's a real-life series of photographs done in Infrared.

[personage2007]

observational data

[dpcathell123]

quite possibly the most important movie of this century!

[KornSarum]

Yeah, proves the existence of black holes