By Abbey

IntroductionIntroduction

In our solar system there are stars and black holes. Stars come in a variety of sizes and shapes. Black holes are sometimes found in the middle of some galaxies.

STARS BLACK HOLES

A star is very hot, glowing gas in the shape of a huge sphere. Stars produce their own energy and light by a method called nuclear fusion. They are many different sizes and colours. The sun is a normal sized yellowish star, stars that are smaller than the sun are usually a reddish colour and bigger stars are blue.

 

Stars are created by really hot gas. This gas is pretty much helium and hydrogen, they are the most highest elements. After a stars fuel runs out most of it’s material is let out back into space. New stars form from this material, so stars have recycled material in them.

A black hole is an area in space where light cannot even escape because the gravity is so strong so if light cannot escape nothing else can.

Another way to describe a black hole is to compare it to a vacuum cleaner. Black holes suck things up by the power of gravity to suck things up, like a vacuum cleaner. Black holes suck up debris (rubbish) left behind in space.

HOW DO BLACK HOLES FORM?

Black holes form when a big star has collapsed, or fallen upon itself. A star collapses when it runs out of fuel and

gets too heavy in weight so it causes the star to get smaller and smaller. The Black hole will usually form in a dense place where there is a lot of

material.

Black holes are lots of different sizes. It matters on how much material is inside them. Black holes have been found in the middle of some galaxies, these black holes are very big in size and have the same mass of material as 100 million suns or more. This type of black hole is seven miles long in width.

ConclusionConclusion

Black holes and stars relate because if there weren’t any stars there wouldn’t be any black holes. The reason is that When stars die and collapse it becomes a black hole. That is why they relate.

Bibliography

http://coolcosmos.ipac.caltech.edu

http://www.kidsastronomy.com/black_hole.htm