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The redshift of distant galaxies is believed to be a result of the Doppler effect - in other words, the light is shifted towards lower frequencies ("redshifted") due to the fact that the galaxies move away from us.

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10y ago
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jaffhard379

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8mo ago
Redshift supports the expanding universe idea because it shows that galaxies are moving away from us.

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Q: How does redshift support the notion of the expanding universe?
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Why was the Big Bang theory more acceptable to Christians?

I would contest the statement that any scientific theory is more or less acceptable to religious denominations. To somebody who believes that the universe was created, the notion that it was created as an eternal unchanging whole should be equally palatable to the notion that it was created as an expanding space. Perhaps, though, the notion that we now had a specific first event to point to provided somewhat of an emotional support to their beliefs.


What determines whether the universe will expand forever or recollapse?

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What did people think of big bang theory?

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