Physics GCSE
galaxy
What galaxy means in Physics GCSE, as defined for AQA.
Definition of galaxy
Check what you remember
Read the wording for your board, then hide it and explain galaxy in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A very large collection of stars held together by gravity.
Topics that use galaxy
- Our solar system (AQA GCSE)
Related terms
- artificial satellites
- dwarf planets
- Equilibrium
- Gravitational collapse
- nuclear fusion
- orbiting the Sun
- scale of the universe
- start of fusion
Using galaxy in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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