Difference between revisions of "Galaxy"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| + | [[File:Galaxy1.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]]. | ||
===About Galaxies=== | ===About Galaxies=== | ||
: '''Galaxies''' are usually held together by a large [[Black Hole]] at the centre. The [[stars]] all [[orbit]] this central [[Black Hole]]. | : '''Galaxies''' are usually held together by a large [[Black Hole]] at the centre. The [[stars]] all [[orbit]] this central [[Black Hole]]. | ||
| + | : [[Scientist]]s believe there are over 200 billion '''galaxies''' in the [[Universe]]. | ||
Revision as of 16:35, 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.