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

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When using telescopes to map out the universe (like DESI), how do astronomers/astrophysicists tell the difference between light that has been redshifted versus light that is coming from a reddish star?

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Why do dogs tilt their heads when they don't understand a command or noise? [xpost r/explainlikeimcalvin]

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Why do dogs tilt their heads when they don't understand a command or noise?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When using telescopes to map out the universe (like DESI), how do astronomers/astrophysicists tell the difference between light that has been redshifted versus light that is coming from a reddish star?	1
Why do dogs tilt their heads when they don't understand a command or noise? [xpost r/explainlikeimcalvin]	1
Why do dogs tilt their heads when they don't understand a command or noise?	1