Black Hole, Really Exist Or Not?

Answer 1

Well, if you are refering to a blackhole, an object in space whose gravitational field is so strong that there is a point for which not even light can escape, then yes, they do exist.

We have discovered recently that all galaxies, including the Milky Way, has a supermassive blackhole in the center. They have the mass of several hundred million suns. In addition to these blackholes, we have also discover high energy gamma-ray bursts at the edges of the Universe. We believe these are also from blackholes emitting gamma-rays at their poles when they suck in large amounts of matter.

There are also blackholes formed from collapsed massive stars, the most famous being Cygnus X-1, where a blackhole cirlcles a companion star and is alo in the process of feeding on it.

Answer 2

Yes, if the mass of a star is concetrated in a small enough spherical region, so that its mass divided by its radius exceeds a particular critical value, the resulting space time warp is so radical that anything, including lihgt, that gets to close to the star will be unable to escape its gravitational grip. Since not even light can escape the "compressed star" they were initially called dark or frozen stars. A more catchy name was coined years later by john Wheeler, who called them black holes- black because they dont emit light and holes because anythign that goes to close falls in to never be seen again. Also if you were to drop your self lets say a meter above a black hole while being connected to a cable time would slow down because of the gravitational pull. If the black hole had 1,000 more times the mass of the sun you clock would tick a ten thousand of a second for every second on earth.

Answer 3

Black holes can't be observed directly of course, but there existence has been verified in two ways --
(1) if the black hole is associated with some nearby star, that star's spatial motion will be perturbed by the black hole's gravity;
(2) the interstellar material being drawn inward by a black hole is accelerated to velocities near light speed, thus generating intense fields of high-energy radiation (x-rays, gamma rays) that can be detected

Answer 4

Yes they are real. We have seen the centers of galaxies where material is orbiting very quickly, thus there must be a great deal of mass there, but there is not a great deal of space. So we have evidence of a very small, very massive object. If the mass is big enough and the size small enough, you have a black hole.

Answer 5

Yes they are real by definition..... being that no one really knows what they are (5th dimension anyone?), its hard to say if they exist being that no one knows what it is. It's like saying UFO; you'd associate it with an alien craft, but a UFO can be anything that flies but you're not sure what it is. However, by scientific definition, some have theorized (and proved?) that millions of blackholes happen in our atmosphere when high speed atoms from outer space strike atoms in our atmosphere, creating a mini blackhole.

Answer 6

Really exist...look up Hawkings Radiation for a way to find them.

Answer 7

I will help u find them, look in the center of galaxy what do u think is dense enough to have gravity strong enough to hold everything in orbit around its center.

Answer 8

yes, they are real. just a star that has finally collapsed in on itself and the gravitational field is so great because of its density that no light can escape. they can be seen in telescopes. why do you think they aren't real?

Answer 9

yep

Answer 10

yep............thats where all the socks go that dont come out of the dryer!!