SUPERMASSIVE BLACK HOLES💫

Sagittarius A*

A Supermassive Black Hole is the largest type of black hole,with its mass being on the order of millions to billions of times the mass of Sun. Supermassive black holes are the larger and massive than black hole. In the center of every galaxy there will be a supermassive black hole. All star and its planet which are present in that galaxy, they are continuously orbiting the supermassive black hole which is present in the center of the galaxy( the galaxy center). In the center of our milky way galaxy there is a supermassive black hole which is known as Sagittarius A* . Our very own star Sun and our planet Earth is also orbiting the supermassive black hole which is Sagittarius A*(supermassive black hole). We are orbiting our supermassive black hole at a distance of 26000-27000 light years approximately.

WHAT IS BLACK HOLE?

A black hole is a place in Space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can not see black hole. They are invisible. Space telescope with special tools can help find black hole. The special tools can see how star that are very close to black hole at differently than other star.

HOW DO BLACK HOLE FORM?

Scientist thinks that modest black hole formed when the universe began. Stellar black holes are made when the center of a very big star falls in upon itself, or collab. When this happen, it causes a supernova. A supernova is an exploding star that blast part of the star into space. Scientists thinks that supermassive black hole were made as the same time as the galaxy they are in.

HOW BIG ARE BLACK HOLES?

Black hole can be big or small. Scientists thinks that smallest black holes are as small as just one atom. This black holes are very tiny but have the match of large mountains. Mass is the amount of matter, or "stuff in an object". 

another kind of black hole is called stellar its mass can be up to 20 times more than the match of the Sun. There maybe many many stellar mass black holes in Earth's galaxy. Earth's galaxy is called Milky Way. 

the largest black holes are called supermassive. This black holes have masses that are more than 1 million Sun together. Scientists have found proof that every large galaxy contents a supermassive black hole its center. The supermassive black hole are the center of the milky way galaxy is called Sagittarius A*. It has a mass about 4 million sun and would fit inside a very large ball that would hold a cube millions Earth.