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Results tagged with space-expansion
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user 193488
The expansion of the universe is a phenomenon wherein, at scales much larger than galaxies, the distance between objects grows over time. This phenomenon is often described as "expansion of space", although there is no difference between space expanding and objects moving apart.
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Understanding expansion of the universe
this is not correct, 1 meter distance will always stay 1 meter, when we say the universe is expanding it means all galaxy clusters receding from each other because of Hubble constant, however, the Hub …
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Energy conservation on expanding universe
while photons appear red-shifted for a remote observer who is receding away due to the expansion of the universe, they still retain the same wavelength and energy relative to the frame they originate …