What do you mean Black holes??
Answers
Don't let the name fool you: a black hole is anything but empty space. Rather, it is a great amount of matter packed into a very small area - think of a star ten times more massive than the Sun squeezed into a sphere approximately the diameter of New York City. The result is a gravitational field so strong that nothing, not even light, can escape.
Answer:
Black hole is a massive interstller body
Explanation:
when the center of a massive star collapsed itself black hole are formed .Collapsion of star happened due to the supernove explosion.
The external part is called "Event Horizon"where garvitation force is very high .Solar light can't passes through in Black hole.It increase by the engulfing of space debris which are formed due to collision of astronomical bodies.