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24 Comments
- anchor, on 10/12/2007, -0/+15I'd be more worried about having my feet attached to my head in the first place...
- szelij, on 10/12/2007, -1/+8I thought we knew this already? The centre of the Milky way is a supermassive black hole isn't it?
- m4ktub, on 10/12/2007, -0/+5I think it's not proven yet as much speculation exists. On the other hand the LISA project seems almost SCI-FI. The degree of precision required is amazing. It remembers me of those mirrors that were extremely polished until the surface had discrepancies of only a few molecules.
- shawgo, on 10/12/2007, -1/+6I like to think of it as giving the light a big hug.
- Jetfire, on 10/12/2007, -0/+3To over simplify a sun(star) is a balancing act between expansion(the fuel burning or fusion) and collapse(it’s mass crushing it self). When the fuel runs out the sun can no longer expand so it now just collapses. If the sun is massive enough it’s weigh collapses to a infinite point(a singularity). On big misconceptions is that that Black holes are giant vacuum cleaners. Once you get past the Event Horizon it’s gravity effect it now different than it was when it was a star. To over simplify again, if our sun sudden turned into a black hole, Earth wouldn’t get suck into it. Why? Because the Black Hole’s mass is still the same as the Sun’s. It just in a lot smaller point.
- Toast1185, on 10/12/2007, -0/+3http://en.wikipedia.org/wiki/Black_hole#Formation
It's all about having enough mass in a tiny amount of space, which means only the biggest can qualify. If a star is massive enough it collapse on iteself continually until it exists in a single point in space. (G=m1*m2/d(squared)) If the distance gets significantly small enough then, say right around 0, then you have a huge gravitational force.
In theory what happens in a black hole is a physics anomaly because everything that goes in is existing at one single point in a plane, my best guess however, is that it is probably something unpleasent. - Enitime, on 10/12/2007, -0/+3Let's see.. You want your government to be an enormously large entity that sucks up every resource it can, while returning next to nothing.
Your wish is granted. That'll be one soul, please.
Love, Satan. - waltwalt, on 10/12/2007, -1/+3We should get these black holes to run our governments, or at least the USA government.
- VeryBoredNow, on 10/12/2007, -0/+2Somebody please explain to me, in english how gravity of a dead star can make it into a black hole (or at least the idea behind it) I can not get my mind around it.
This is how I see it, let's say a star dies, gets cold and then what? Are black holes dead stars that had WAY more gravitational pull than other stars that died? And even so, what happens to the star itself?
I am sorry for the dumb questions (there are no dumb questions only dumb people), I just wanna know ... everything. - Toast1185, on 10/12/2007, -0/+1The inability of for light to escape from a black hole is the gravity equation I listed above. When all of the mass of a star gets compressed into a single point in space, the distance between the HUGE mass of the star and the light becomes immense. A black hole does not in fact suck in all light anywhere in space, but traps what comes within its field and the rest of the light is bent, which is how we can 'see' them to a certain extent
- megaloid, on 10/12/2007, -3/+4Good. Before reading this article, I was gravely concerned about the way the galaxy was developing. Maybe sometime I'll tell you guys the story about the autographed picture of Cygnus X-1 on my mantelpiece.
- szelij, on 10/12/2007, -0/+1Robwistar, a star undergoes fusion reaction(hydrogen and some other things i believe) and that gives off light among other things. A black hole occurs after all the FUEL for the fusion reactions is finished...
For more info a simple search at Wikipedia or Google will suffice. - hankyone, on 10/12/2007, -0/+1i was close eh
- Mousse, on 10/12/2007, -0/+1robwistar
Imagine squeezing the mass of the earth into the size of a golfball. What would happen if we got near such a large concentration of mass? Would we be able to walk on its surface as we do right now? Why not?
Now imagine that there is a massless balloon the size of the earth and we have placed this golfball in the center of it. While walking on the surface of this balloon would we experience the same gravity as we do right now? Why?
We can treat the earth as an object with a mass concentrated at the center. As we stand on earth we are several thousand miles away from its center. If we could get closer to such a mass gravity would increase pretty quickly as we get nearer.
(This doesn't work with our current earth because as we get closer to the center of the earth the mass will be distributed all around us so that we would experience LESS gravity as we got closer, because we are being pulled from all sides.) - dirtDIGGler, on 10/12/2007, -0/+1@robwistar right ... i understand how it generates light. but how does that light escape the gravity of the sun that generated it?
Gravity of the Star isn't strong enough to have the escape velocity greater than the velocity of Light but Black hole does. - inactive, on 10/12/2007, -2/+3Or, they are GOD's rather effective "vacuum cleaners".
- tidejwe, on 10/12/2007, -0/+1I've always wondered what would happen if you could get some "Anti-matter" atoms into a black-hole...when it crushes the magnetic shield suspending the anti-matter, would it start a new mini "Big bang" reaction? That'd be pretty cool!
- robwistar, on 10/12/2007, -1/+1k, follow-on question:
if light can't escape black holes, and black holes have the same mass as the star once did, how did the former star ever give off light in the first place? - Toy0, on 10/12/2007, -1/+1Damn, I'm sure glad that no Binary Black Holes will be colliding in my lifetime. That's a pretty scary prospect!
- fires, on 10/12/2007, -0/+0I think it has to do with the fact that all the mass is compressed into an infitesimal (inifinitely small) point in space in the case of a black hole while the same mass is spread out in the huge space taken up by a star so the amount of gravity acting on a light beam escaping from the star is not the same as the amount of gravity acting upon a light beam near a black hole.
I'm no physicist so this is just a hunch. Would be nice to know if it makes sense. - robwistar, on 10/12/2007, -0/+0right ... i understand how it generates light. but how does that light escape the gravity of the sun that generated it?
- datagod, on 10/12/2007, -6/+5Wow, I am sure glad these black holes are governened by the laws of physics that just happened to accidentally come into existence all on their own.
- ophello, on 10/12/2007, -2/+1Creepy.
- hankyone, on 10/12/2007, -3/+1here is what i think;
when a star dies it pulls so much gravity that it breaks the space/time dimension or continuum and therefore creates a hole where everything is pulled in (or something along this way)
not sure if it makes sense tho...
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