The cosmological redshift is not really a velocity at all, but a measure of the expansion of space- time.
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Q7: The cosmological principle is the ultimate extension
Q7: The universe has been expanding at the
Q8: Olbers's paradox seeks the explanation for why
Q9: An infinite universe is a basic assumption
Q10: Galaxies are moving away from us and
Q11: The latest observations of distant Type I
Q13: Hubble's law implies that, at some time
Q14: Euclidean geometry is useful for most common
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Q17: A gravitationally bound universe, with omega greater
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