Elver Sivac

BLACK HOLES

Black holes are places where ordinary gravity has become so extreme that it overwhelms all other forces in the Universe. Once inside, nothing can escape a black hole's gravity — not even light.

What is a black hole?

A black hole is formed by the collapse of a massive star's core in a supernova.

What causes a black hole to form?

The nearest black hole is many lightyears away, so we don't have to worry about threats to the Earth. This is as close as you'll ever get to one.

How near is the nearest black hole?

One the interesting black hole facts is that they can not suck up all of the matter in the Universe. Each black hole has its own event horizon, much like the gravitational field of a planet. If matter is not in that horizon it will never get sucked into the black hole.

What gets sucked into a black hole?

This one tips the scales on the heavy end as black hole facts go: there is a super massive black hole at the center of the Milky Way galaxy. It weighs in at about 4 million solar masses

How massive are black holes?

 Black holes emit x-ray radiation and get smaller and smaller until they disappear, or "evaporate".

How do black holes disappear?

There are currently 14 known black holes. Astronomers think that at least one black hole is born every day.

How many black holes are there?

No. You would be killed by many things before you could enter the black hole. Gravity would pull you apart. X-rays and other forms of radiation would be lethal.

Could you travel in a black hole?

The escape velocity of a black hole is greater than the speed of light therefore light doesn’t travel fast enough to escape it.

What makes a black hole black?