2007-01-18 01:32:06 · 3 answers · asked by Erasmo Carvalho 1 in Science & Mathematics ➔ Astronomy & Space
Gravity, acording to Einstein's theory of relativity is a distortion of Space-Time. A Black hole is formed by the mass of a Singularity where the distortion is strong enough to completely sever the the Space-Time continuum. At this point all the rules of our universe break down.
2007-01-18 01:48:39 · answer #1 · answered by Red P 4 · 1⤊ 0⤋
Because gravity warps the fabric of space-time in its vicinity, and since a black hole is a really large gravitational body, it warps space-time a LOT.
The classic analogy is this: Imagine that you have a big sheet of fabric, like a bedsheet, and you and some friends stretch it taut so that it's a flat, even surface. Now, into the middle of this surface, you drop a tennis ball. The weight of the tennis ball creates a dimple in the surface of the sheet, right? And the size of the dimple is proportional to the weight of the object, so now let's say that you and your friends hold on tight to the edge of the sheet and throw a bowling ball into the middle. The bowling ball makes a much bigger dimple in the fabric, and there is a tendency for the tennis ball, if it is close enough, to slide down that well and bump into the bowling ball.
Black holes are the same as that bowling ball, only they warp the "fabric" in three spatial and one temporal dimension, and the tendency of objects to slide down into each other's dimples is what we call gravity.
2007-01-18 01:49:56 · answer #2 · answered by theyuks 4 · 1⤊ 0⤋
interesting question..
the thing is, very strong gravitational force is the main key in bending space time. our sun do bend space time too (it has a gravitational area of more that 100AU. 1 AU is the distance from sun to earth)..
astronomers found out that the wave which passes through those regions appears to be bend. which means, the space in that region is "bend"..
light can't even escape a black hole. what makes you think it cannot bend space time?
by the way, black holes also consists of gases, dust orbiting around it in nearly light speed. it also emits x-rays when sucking on other nearby "stars".
2007-01-18 01:55:32 · answer #3 · answered by jx 1 · 1⤊ 0⤋