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Black holes

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Posted Apr 3, '08 at 9:55pm

XCoheedX

XCoheedX

1,061 posts

I'm not totally sure, but I think I have the right spot to post this.

I want to see what you all think of what actually happens in a black hole, or just what you know about them. I read one book that explained a black hole as a stretching of space as it gets bigger and it's gravity pulls everything in. It also said that in the black hole, you can actually get to other dimensions! That last part I don't believe, but i want to see what you guys have to say.

 

Posted Apr 3, '08 at 9:58pm

kingofgames

kingofgames

575 posts

i think in a black hole martirials get mixed up and they are bulding things like meteors they get thrown out of the black hole and crashing down on the earth

 

Posted Apr 3, '08 at 9:59pm

LeBronJames123123

LeBronJames123123

382 posts

I read in a book that you can't see a black hole, but if you see stuff disapearing in the mid air it is probably a black hole. It said that you can only see the things dissapear through a microscope. I did not really read the book alot just that part.

 

Posted Apr 3, '08 at 10:03pm

Sting

Sting

339 posts

I will never be 'sucked' into a black hole, so personally I do not think it is relevant to my life right now.  Maybe someday (...how?) but not right now.

 

Posted Apr 3, '08 at 10:07pm

XCoheedX

XCoheedX

1,061 posts

@LeBron. Well you are right that you can not see a black hole. Not only can you see things being "sucked" in, but they also suck in light! A black hole's power is way powerful.

 

Posted Apr 3, '08 at 10:10pm

Canada08

Canada08

4 posts

well that is how our world will end when the Sun explodes in a Black whole

 

Posted Apr 3, '08 at 10:23pm

XCoheedX

XCoheedX

1,061 posts

Well you are right! Of course when the sun becomes that big, we will be living somewhere other than Earth. So we will be blasted before we know it. Unless tecnology gets really advanced by that time, we will have to live through it. But now that I said that, our lord will probably have set up his kingdom on earth. So we will be fine.

 

Posted Apr 3, '08 at 10:51pm

Ricador

Ricador

3,335 posts

A black hole is created when a star runs out of gas. Then it collapses because it can not support it's own gravity.

Also things don't get "sucked in". Before the object would even reach it, it would stretched into a "strand of spaghetti" first from it's power. So things aren't just in space then disappear. They get deformed, thrown around, then they collapse on themselves and then disappear.

Interesting fact- Black holes range in sizes. The smallest one that was just found was about 15 miles across. About the size of a city. What's cool about that is it is the strongest black hole ever discovered, and the smallest. And even weirder, and Einstein equation showed that the smallest black hole that could possibly exist could only be about 15 miles across, about the size of a city. That man was pretty genius wasn't he.

 

Posted Apr 3, '08 at 11:01pm

Strop

Strop

10,824 posts

Moderator

To add just a little, the star has to be pretty massive (classed a supergiant), or several hundred thousand times the size of our solar system's sun to be able to collapse into such a point singularity. Even then it may simply form a "neutron star", which is a very small (it would fit on a teaspoon), but very very dense (in the order of 10000 times the mass of the earth).

I haven't read up on black holes in a long time, but I'll give a simple (Newtonian) description of what I remember: the force of gravity is actually dependent on mass and distance. In effect, the larger two masses are, and the closer they are to one another, the more the gravitational attraction there is between them.

So when a supergiant star burns out, it will explode in a supernova and all the mass will collapse upon itself. The denser this mass is, the more likely it will form a black hole. You can thus think of a black hole as something that was just so dense that pretty much everything is attracted to it.

This way you don't have to think of it like a giant space-hoover :P

 

Posted Apr 3, '08 at 11:42pm

florglee2

florglee2

1,864 posts

i betcha it stretches ya way out when ya get sucked in