How can we know about black holes if no one has ever gone into one?

Answer 1

we do not know about black holes cause some1 has seen them or been there! we knowof their existence cause of their effects that are observed in the universe! a system of stars rotating around a common point in space! if any1 will ever go into a black hole he will not be able to even send a signal back to earth or even a space shuttle near by for that matter cause the signal will be sucked ryt into it! and more over he will not survive as time will come to a hault in side a black hole

Answer 2

The special property of black holes was that it was emiting X- rays which was discovered in the late 90's. The hubble telescope has X-ray detectors which detects X-rays coming from outer space. Some of the scientists from NASA with the help of the telescope got to know the origin of these X-rays, but couldn't see them. Careful observations showed that the nearby celestial bodies were being attracted by it. Only then could the scientists predict the location of the mysterious thing. then later it was named the black hole.

Answer 3

properly thinking no person has been to a black hollow and that they have got in user-friendly terms been stated we are able to think of that from the outstanding gravitational field which you would be drawn into the black hollow, Interstellar area isn't a organic vacuum and there are an extremely small quantity of hydrogen atoms each cubic centimetre. A black hollow attracts those atoms in and compresses them right into a fairly extreme density, this technique reasons friction and different mecahnisms, this varieties a plasma merely above the form horizon. Now thinking the human physique is already lots greater dense than some hydrogen atoms, you are able to anticipate extreme pressures that would desire to pressurise the atoms in our physique and probable turn us right into a plasma like state. the closest factor we are able to think of i think is diving to the backside of an ocean and imploding. thinking gentle can not escape the form horizon then ther isn't something we could build to get via. If gentle became emmited particularly than sucked via then we'd see what's on the different area. yet thats why they are black holes :) we cant see them.

Answer 4

we don't "know" about much about black holes so much as "have theories". it is uncertain what would happen if someone did go into a black hole, but mostly i think it's believed that you would die via every particle of your body being stretched and twisted until you come apart under the strain of several gravitational forces. if that's the case, then the real question should be, how do you get information from the dead?

Answer 5

Black holes....a very wide imaginative topic...nobody has been able to give a real strong reason of their existance...but we can never deny the theories cos they are based on researches done by the experts...its just becos of the dead stars..which when gain too much gravity which is highly dense....dis gravity can just be felt....we cnt ever see the black holes...but i think da way science going on to the path of development...i hope we wud be able to c it all in sumtime!!

Answer 6

If someone went into a black hole, we still would know nothing because they would never come back out.

Answer 7

I beleive "black holes" are detected by the huge amount of x-ray radiation they "emit" and by the observable effects they have on nearby celestial bodies.

Answer 8

We have not gone into the sun but we know its there. We can learn without touching.

Answer 9

I think I've lived most of my life in one. Nothing I do ever gets recognised, so I must be invisible!

Answer 10

u can see them silly!...just ask NASA....and while your there, tell them to buy some more foam for insulation!