Difference between revisions of "Galaxy"
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| − | [[File: | + | [[File:Galaxy2.png|right|300px|thumb|This [[galaxy]] has over 100 billion [[star]]s.]] |
A [[galaxy]] is a group of millions of [[Star|stars]] held together by [[Gravity|gravity]]. | A [[galaxy]] is a group of millions of [[Star|stars]] held together by [[Gravity|gravity]]. | ||
Revision as of 16:36, 2 November 2018
Key Stage 3
Meaning
A galaxy is a group of millions of stars held together by gravity.
About Galaxies
- Galaxies are usually held together by a large Black Hole at the centre. The stars all orbit this central Black Hole.
- Scientists believe there are over 200 billion galaxies in the Universe.