What do you mean by Black hole??
Answers
Answer:
black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes. They are invisible.21
Answer:
A black hole is an area of space with a gravitational field so strong that nothing, not even light, can escape it. That’s why black holes appear black. In some cases, black holes are former massive stars that have been crushed to an extreme density during supernova explosions. In other cases, black holes contain the mass of millions or billions of stars.
People often ask, if black holes are black – if light cannot escape them – how can we see them? The answer is that we see the effects black holes have on the space around themselves.