Asked by caleb
Edwin Hubble's observations of galaxies supported an idea, which is a key feature of the Big Bang theory. What is this idea?
the existence of exoplanets
the Sun as the center of the solar system
the life cycle of stars
the expansion of the universe
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the expansion of the universe
Hubble observed that distant galaxies are redshifted and recede from us (velocity proportional to distance), evidence that space itself is expanding — a cornerstone of the Big Bang theory.
Hubble observed that distant galaxies are redshifted and recede from us (velocity proportional to distance), evidence that space itself is expanding — a cornerstone of the Big Bang theory.
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