That would be a black hole.
Yes, every planet and every star has gravity. In fact, every object that has mass, has gravity. Black holes have so much gravity that even light cannot escape.
No. To even reduce it by 75% you must travel out to 4000 miles.
Does gravity gve off its own light? What a stupid question, gravity is a force, you cant even see it. Nebulas are clouds of gas, but newly formed stars within them can give off light. Remember, everything you can see is giving off light.
Blackholes are not really holes, it is where a huge amount of matter has come together and has been concentrated into a very small area. Mass is related to gravity, any mass has gravity, but you don't really notice it until you have enough mass like that of the earth. There is so much mass at the centre of a black hole that even light cannot escape it's immense gravity - that's why it's black.
Black Hole
A black hole because it can be small and massive and not even light can escape it.
A black hole because it can be small and massive and not even light can escape it.
Black holes - and not all are small.
Your category is the answer, that thing is black hole
No; a black hole has a gravitational force that's so strong that even light cannot escape it.
We call these "black holes" because the gravity is so strong that it even pulls in all of the light.
It basically draws you in with massive gravitational force which even light can't escape.
That is called a "black hole".
No they are not, their gravity is so powerful that even light cannot escape their pull.
Inside the event horizon of a black hole.
The gravity casued by the black hole is so strong that even light is sucked into it
The gravity in a black hole is so strong that not even light can escape. For all intents and purposes it can be considered infinite.