Unanswered Questions

A gravitational wave contains energy. That means it creates its own gravity field. But after the wave has passed, spacetime will be again as it was before. How is the energy of the wave given to the ...

So this question is a two-parter. To elaborate on the first question, let's say you are 10 light-years away from this black hole and it is the mass of the one in the center of our galaxy. 2nd question:...

What do you then mean by constructing a sphere of circumferential radius $r$ centered on the black hole? Is that sphere a 2D surface?

None of the answers to this question or this question answer my question. Once an object falls past the event horizon, it can no longer act as a source of gravity. Also, if one tiny object falls into ...

This is thought experiment. I know we can not insert or watch happening inside black hole. But for sake of thought experiment let's think this is possible. Suppose we have 1 kg of material X with half ...

I ve studied that blackholes swallow everything that comes near to them and a supernova blast is so powerful that if it occurs at one end of our solar system it will destroy whole of it . What will ...