Cosmetologists are the astronomers and physicists who do research in cosmology.
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Q64: The rate of expansion of the Universe
Q65: Most of the elements heavier than helium
Q66: Even if the Universe has no edge,
Q67: The cosmological principle states that any observer
Q68: The redshifts of the galaxies imply that
Q70: The deuterium and lithium-7 in distant quasars
Q71: The elements hydrogen and helium were made
Q72: Antiprotons and positrons are examples of _,
Q73: If the average density of the universe
Q74: A center or an edge of the
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