/u/Imma_not_a_bot's posts in /r/askscience

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How do we know the actual wavelength of light originating from the cluster of galaxies that are receding away from us when all we observe is red shifted light because of expansion?

3774 upvotes

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What conditions on Earth have helped in harboring Oxygen compared to other planets?

7 upvotes

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Can gravitation be considered as a dual property of attractive force between masses and distortion of space time,similar to electron's wave- particle duality?

6 upvotes

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Why don't we use antibodies produced by animals that are resistant to the diseases that harm us humans?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How do we know the actual wavelength of light originating from the cluster of galaxies that are receding away from us when all we observe is red shifted light because of expansion?	3774
What conditions on Earth have helped in harboring Oxygen compared to other planets?	7
Can gravitation be considered as a dual property of attractive force between masses and distortion of space time,similar to electron's wave- particle duality?	6
Why don't we use antibodies produced by animals that are resistant to the diseases that harm us humans?	1