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10 questions from this quiz
3.00×108 m s−13.00 \times 10^8 \,\mathrm{m\,s^{-1}}3.00×108ms−1
c=fλc = f \lambdac=fλ
The galaxy is moving away from observer
A shift towards shorter wavelengths
Frequency decreases
The galaxy is moving away from us
Nearly all show redshift
Hubble constant
Space itself is expanding
Receding
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