Comets' heads can be green, but never their tails: After 90 years, we finally know why

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notFritzArgelander
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Comets' heads can be green, but never their tails: After 90 years, we finally know why

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Post by notFritzArgelander »

It strikes me as funny that folks complain that we haven't found dark matter in a lab yet..... Yet here we are waiting 90 years for a lab result on why comet tails aren't green..... :)

https://phys.org/news/2021-12-comets-gr ... years.html
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Bigzmey United States of America
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Re: Comets' heads can be green, but never their tails: After 90 years, we finally know why

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Post by Bigzmey »

Neat story, thanks for sharing nFA.
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Observing: DSOs: 3106 (Completed: Messier, Herschel 1, 2, 3. In progress: H2,500: 2180, S110: 77). Doubles: 2437, Comets: 34, Asteroids: 257
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turboscrew
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Re: Comets' heads can be green, but never their tails: After 90 years, we finally know why

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Post by turboscrew »

Made me wonder. What if life on earth didn't start with just the material around here? Could there have been a shower of meteorites with some unstable stuff, whose hitting the material here could have kicked "the ball in motion"?
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