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10 questions from this quiz
Distance light travels in one year
Alexander Friedmann in 1922
vD=constant\frac{v}{D} = \text{constant}Dv=constant
Luminosity to temperature & surface area
Period is related to luminosity
v=H0Dv = H_0 Dv=H0D
The galaxy is receding from us
The age of the Universe
Mutual gravitational attraction
Space itself between galaxies
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