What is there to know about a black hole?

Question

I want to know all about a black hole, like how its formed what they think it does and any other info

Answer 1

if blackholes exist how come we aint been sucked in yet

Answer 2

  If a black hole could exist it would be a 2 solar mass sphere about 3 km in diameter whose surface gravity was such that the surface escape velocity would be greater than the speed of light.

Since nothing could escape from the surface it would be invisible.

  It would be formed by the remnant of a super nova that collapsed after the massive star exploded.

Answer 3

Black holes are objects so dense that nothing in the universe can escape from their gravitational pull...not even light.

The following will take you links to sites that have all kinds of facts and stories about black holes:

http://tech.groups.yahoo.com/group/Daily...

Answer 4

Black holes suck.

Answer 5

Our Sun will expand into a red giant but will collapse in on itself when it runs out of fuel. The collapsing matter will create a white dwarf but the shockwave of the collapse will blow off a lot of the Sun's matter. Stars much larger than the Sun follow these same steps except instead of forming a white dwarf the energy of the collapse is great enough to crush atomic nuclei togethor creating particles with no volume only mass. Usually a photon would just bounce of a nucleus but since there is nothing to bounce off of the photon can reach the very center of the nucleus where the effects of gravity are to great to escape. Similarly any other atoms that stray too close join in the infinitesimally small singularity of matter. This continues until all the matter of the previous star is part of the black hole or spiraling down into it.

Black holes just hold on to the matter they take in but they might release some as Hawking Radiation. If this is the case after several hundred billion years even the Super Massive Black Holes at the center of galaxies will evaporate to nothing. But its still has yet to be observed.

Black Holes are black allowing no light to escape from them so they cannot be detected with telescopes directly. They are detected by the gravitational effects they have on nearby stars.

Answer 6

It's a hole. It's black. And it really stinks if you fall into one.

Most black holes are formed when a star explodes. The recoil on the star's core compresses the matter so far that it just goes ahead and collapses the rest of the way to zero volume, leaving only its gravity behind to suck in other stuff. Like astronautas who get too close!

Answer 7

A black hole is a region of space in which the gravitational field is so powerful that nothing, not even light, can escape its pull after having fallen past its event horizon. The links will tell you all there is to kinow

Answer 8

These questions are still in the process of being answered but new information points to black holes as more common than previously believed. New information seems to indicate that they exist in almost every galaxy. Black holes develop when huge amounts of matter coalesces and collapses into itself. When they are active more matter is drawn into them and once this matter passes the event horizon nothing more is known of what happens to it.