2007-07-27 17:49:26 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
i realy dont no sorry
2007-07-27 18:00:07 · answer #1 · answered by (: 2 · 0⤊ 1⤋
Black holes are named because near the things (inside the event horizon), even light cannot escape. The event horizon appears black, because no light escapes from it.
The "hole" part comes from the "rubber sheet" analogy of space: If space (the rubber sheet) were flat, the presence of a mass (represented by a bowling ball) would curve space, making a sort of dimple in the sheet. The curved space would cause other masses to be pulled towards it (this is gravity). A black hole is basically a mass so concentrated that it makes an infinitely deep dimple in space, a bottomless hole.
2007-07-27 18:00:05 · answer #2 · answered by lithiumdeuteride 7 · 0⤊ 0⤋
If a black hole could exist,it would be a 2 to 3 solar mass entity 3 km in diameter whose surface gravity was such that the escape velocity would be greater than the speed of light.
No radiation could leave the surface so it would be invisible.
It would act like any other celestial body but be invisible.
2007-07-28 01:15:18 · answer #3 · answered by Billy Butthead 7 · 0⤊ 0⤋
Because light cannot escape from inside the event horizon of a singularity (aka black hole) the escape velocity of the large mass is greater than the speed of light in a vacuum inside the event horizon - (that is what actually defines the event horizon, or the sphere around the mass where the escape velocity is greater than C.) outside that sphere, material entering the black hole is flattened and accellerated so black holes with mass entering them aren't really black at all.
2007-07-27 17:56:49 · answer #4 · answered by Steve E 4 · 0⤊ 1⤋
A black hole is the result of what happens after only the massivest stars explode. When a massive star explodes the collapse causes a whirlwind effect which creates a suction of all the gravity, light, sound, etc. into one infinite point. There is evidence that these exist, but they are rare. It is believed that the center of our galaxy may be harboring a giant black hole
2007-07-27 17:54:39 · answer #5 · answered by Lindsay O 2 · 0⤊ 1⤋
Can't see into it. Nothing that goes into it comes out of it.
Hence, "black hole". Now, how hard is that to understand?
And they are an "infrequent" anomaly in the universe. Their existence is supported by observations and measurements. It is their extremely high concentrated mass, not any "whirlwinds" that create the intense gravitational field.
2007-07-27 17:55:05 · answer #6 · answered by Anonymous · 0⤊ 1⤋
blackhole
2007-07-31 13:23:51 · answer #7 · answered by louis g 3 · 0⤊ 0⤋
it's really nothing, not even a hole, no one can really figure out or understand these things since not even light can escape from them, but a person would stretch out like spaghetti and die if they got too close, the gravitational pull is amazing on one of those things
2007-07-27 17:57:39 · answer #8 · answered by michelle a 2 · 0⤊ 1⤋
c'mon down to Georgia they're everywhere.
2007-07-31 13:26:20 · answer #9 · answered by high_speed_sly 2 · 0⤊ 0⤋
WOAAAAH! check out astrogirl's link ! wow!!
2007-07-27 19:26:53 · answer #10 · answered by Anonymous · 0⤊ 0⤋
check this out !!!
Black hole Rips Star Apart !!
http://www.esa.int/esaCP/SEMUPO1PGQD_index_2.html
2007-07-27 19:26:09 · answer #11 · answered by Anonymous · 0⤊ 0⤋