Difference between revisions of "Galaxy"
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:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Galaxies; and red-shift, page 256, GCSE Physics, Hodder, AQA ''] | :[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Galaxies; and red-shift, page 256, GCSE Physics, Hodder, AQA ''] | ||
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Latest revision as of 09:32, 11 December 2019
Contents
Key Stage 3
Meaning
A galaxy is a group of millions of stars held together by gravity.
About Galaxies
- Our home galaxy is called The Milky Way which contains around 400 billion stars.
- The nearest galaxy to The Milky Way is called the Andromeda galaxy and is 2,000,000 Light Years away.
- 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.
Key Stage 4
Meaning
A galaxy is a group of millions of stars held together by gravity.
About Galaxies
- Our home galaxy is called The Milky Way which contains around 400 billion stars.
- The nearest galaxy to The Milky Way is called the Andromeda galaxy and is 2,000,000 Light Years away.
- 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.
References
AQA
- Galaxies, page 250, GCSE Physics, Hodder, AQA
- Galaxies, pages 101, 102, GCSE Physics; The Revision Guide, CGP, AQA
- Galaxies, pages 320, 322, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Galaxies; and red-shift, page 256, GCSE Physics, Hodder, AQA
- Galaxy, pages 274-5, 280, 289-293, GCSE Physics; Student Book, Collins, AQA