Ocean A Source Of Life
By Kahciar
Tuesday, May 15, 2018
Tuesday, May 8, 2018
Black Holes - Astronomy
Can We See What Inside Of A Black Hole?
In Science we had gotten a choice of what topic related with science we wanted to do. I chose Astronomy I thought it would be fun to research more about outside earth. For this blog post i'll be
focusing on Black Holes.
What are Black Holes?
A black hole is a place in space where gravity pulls so much that even light can not escape. Black Holes gravity is so strong anything floating around it can be sucked in.The gravity is so strong because matter has been squeezed into a tiny area. This can happen when a star is fading. Also known as a Red Giant Star.
Because no light can't escape, people can't see black holes. They are completley invisible. Space telescopes with special tools can help find black holes.
How Big Are Black Holes?
Black Holes can come in different sizes (Small, Big, Medium etc) Scientists think the smallest black holes are as small as just one atom. These Black Holes are very little but have mass of a large mountain.
Black Holes can come in different sizes (Small, Big, Medium etc) Scientists think the smallest black holes are as small as just one atom. These Black Holes are very little but have mass of a large mountain.
Another kind of black hole is called "stellar." Its mass can be up to 20 times more than the mass of the sun. (Suns Mass: 1.989 × 10^30 kg ) There may be many, many stellar mass black holes in Earth's galaxy. (The Earths Galaxy Is A Milky Way)
The largest black holes are called "supermassive." These black holes have masses that are more than 1 million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.
The largest black holes are called "supermassive." These black holes have masses that are more than 1 million suns together. Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.
How Do Black Holes Form?
Scientists think the smallest black holes formed when the universe began.
Stellar black holes are made when the center of a very big star falls in upon itself, or collapses. When this happens, it causes a supernova. A supernova is an exploding star that blasts part of the star into space.
Scientists think supermassive black holes were made at the same time as the galaxy they are in
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