A black hole
No; a black hole has a gravitational force that's so strong that even light cannot escape it.
A black hole has so much mass that light can't escape from it once it passes the event horizon. It can still escape if it hasn't passed the evnt horizon.
Light is affected by gravity, if the gravity is immense. In a black hole, the gravity is so immense that light cannot escape from it, hence it cannot be seen - whcih is why it's called a "black hole".
Your category is the answer, that thing is black hole
Escape velocity is the speed you would have to go to escape gravity.
A "Singularity" or a "black hole".
No; a black hole has a gravitational force that's so strong that even light cannot escape it.
A black hole because it can be small and massive and not even light can escape it.
A black hole.
A black hole because it can be small and massive and not even light can escape it.
A black hole.
The atmosphere is held in place by gravity. Other things being equal, the more massive the planet, the harder it is for a gas molecule to escape into space.
A black hole has so much mass that light can't escape from it once it passes the event horizon. It can still escape if it hasn't passed the evnt horizon.
Light is affected by gravity, if the gravity is immense. In a black hole, the gravity is so immense that light cannot escape from it, hence it cannot be seen - whcih is why it's called a "black hole".
A black hole
That would be a black hole.
No, a black hole is not some sifi mysterious thing that causes unknown things to occur, like complete realities. It is simply a massive source of gravity, so massive that light cannot escape it.