Recent questions tagged astrophysics

Description : Stephen Hawking is no more. Anything you would like to say for a great personality like him?

Last Answer : I believe I have a few words to say, sir. Just look at that face. The face of a thinker. A warrior. A man for all seasons. Yes, Stephen Hawking was all that and more. But he was not perfect. ... to know him. Those who knew him, loved him, while those who did not know him, loved him from afar.

Description : Can someone explain the dark matter hypothesis?

Last Answer : Coincidentally, I watched The Theory of Everything yesterday, a wonderfully acted bioflick about Stephen Hawking. It motivated me to start reading his book, A Brief History of Time, which covers dark matter and many ... time-space ideas. I have an extra copy, if you'd like me to send it to you.

Description : Astrophysics question: Are zero braking distance collisions and infinitive forces possible?

Last Answer : No, it is not. F=m*a, where a is acceleration expressed in m/s/s. zero braking distance also means zero deceleration time. deceleration is negative acceleration. So zero deceleration time turns it into m/s/0. Division by zero.

Description : Can a black hole overeat?

Last Answer : I don’t know, lets go ask Beyonce ;¬}

Description : Can dark matter be explained by the supermassive black holes found in almost every galaxy?

Last Answer : answer:also, Dark Matter has existed in the universe since early times.. and new evidence proves that so have the black holes… infact, development of galaxies occurred by accretion of cosmic dust around blackholes… and same thing has been said about the dark matter here..

Description : Can this be the explanation for dark energy?

Last Answer : Not really, because that does not explain the fact that the expansion of the universe is accelerating.

Description : If the universe is infinite than how can it be expanding?

Last Answer : I think the people who came up with that idea think that the contents of the universe are expanding, but not the universe itself. I could be wrong though, just a guess.