Everyday Science
Who first proposed the theory of an expanding universe?
Edwin Hubble
Georges Lemaître
Galileo Galilei
Vesto Slipher
Edwin Hubble
The theory of an expanding universe was first proposed by Edwin Hubble in 1929. He discovered that the light from distant galaxies was shifted towards the red end of the spectrum, which is a phenomenon known as redshift. Redshift is caused by the expansion of space, so Hubble’s discovery provided evidence that the universe is expanding.
Edwin Hubble The theory of an expanding universe was first proposed by Edwin Hubble in 1929. He discovered that the light from distant galaxies was shifted towards the red end of the spectrum, which is a phenomenon known as redshift. Redshift is caused by the expansion of space, so Hubble’s discovery provided evidence that the universe is expanding.
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2 responses to “Who first proposed the theory of an expanding universe?”
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It was Hubble and not Einstein
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corrected
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