How does redshift provide evidence that the Universe is expanding?
Light from distant galaxies shows an increase in wavelength, indicating they are moving towards us.
Light from distant galaxies shows a decrease in wavelength, indicating they are moving towards us.
Light from distant galaxies shows an increase in wavelength, indicating they are moving away from us.
Light from distant galaxies shows no change in wavelength, indicating they are stationary relative to us.
Flashcards for Edexcel A Level Physics Age, fate and dark matter in the universe, covering the key terms, definitions and equations you need to recall for Paper 1, Paper 2 and Paper 3. 23 cards, matched to the Edexcel A Level Physics (9PH0) specification.
