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GCSE
A Level & IB
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More cards in this set
Card 16
Front
What are the three main groups on a HR diagram?
Back
Card 17
Front
What four reasons may one star appear brighter than another?
Back
Card 18
Front
Explain what is meant by one arcsecond
Back
Card 19
Front
What conditions are necessary for an object to be a black body?
Back
Card 20
Front
Why are there no green stars?
Back
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