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How does redshift provide evidence that the Universe is expanding?
A
Light from distant galaxies shows an increase in wavelength, indicating they are moving towards us.
B
Light from distant galaxies shows a decrease in wavelength, indicating they are moving towards us.
C
Light from distant galaxies shows an increase in wavelength, indicating they are moving away from us.
D
Light from distant galaxies shows no change in wavelength, indicating they are stationary relative to us.
Card 1 of 23
Age, fate and dark matter in the universe Flashcards
23 flashcards on Edexcel A Level Physics Age, fate and dark matter in the universe: the key terms, definitions and equations you need to recall for Paper 1, Paper 2 and Paper 3.