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More cards in this set
Card 6
Front
What is the Doppler effect?
Back
Card 7
Front
What is a galaxy?
Back
Card 8
Front
What has happened to the frequency of light that reaches Earth from distant galaxies?
Back
Card 9
Front
How can we tell if light from a distant galaxy has been red-shifted?
Back
Card 10
Front
What has happened to the gamma radiation produced at the time of the Big Bang?
Back
Card 11
Front
What piece of evidence can only be explained by the Big Bang theory?
Back
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