- #1
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The idea of an expanding universe is said to be proven by using the calculated distance of a Cepheid star from us, and the amount of change in the wavelengths of light emitted from the Cepheid star relative to us.
There must be another way to prove the universe is expanding since the above is only proof if you assume that the change in wavelength is caused by the expansion of space. Is anyone aware of another method used to prove the expansion? Has anyone measured the distance of the same Cepheid star several years apart?
There must be another way to prove the universe is expanding since the above is only proof if you assume that the change in wavelength is caused by the expansion of space. Is anyone aware of another method used to prove the expansion? Has anyone measured the distance of the same Cepheid star several years apart?