Science Memes

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Get scattered (mander.xyz)

submitted 2 months ago by [email protected] to c/[email protected]

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[–] [email protected] -3 points 2 months ago (3 children)

Isn't it more of a blue shift / red shift situation, rather than scattering?

[–] [email protected] 40 points 2 months ago (1 children)

No, it's definitely atmospheric scattering. Blue and red shifting occurs when interstellar objects accelerate towards or away from us near the speed of light

[–] [email protected] 19 points 2 months ago (3 children)

Imagine the horror if the earth accelerated at such extreme speeds on a regular basis.

[–] [email protected] 7 points 2 months ago

How do you know it doesn't? Science.

[–] [email protected] 5 points 2 months ago (1 children)

Or rather imagine the horror if the earth accelerated at such speeds DIRECTLY TOWARDS THE SUN 😬😂

[–] [email protected] 2 points 2 months ago

Not for long at least...

[–] [email protected] 3 points 2 months ago

Okay, class. We're going to watch NOVA today.

"Earth: God's Baby Rattle"

[–] [email protected] 8 points 2 months ago* (last edited 2 months ago) (1 children)

There is a very small amount of red shift. If you were standing on the equator watching a sunset, then your radial velocity relative to the sun is only ~461m/s. So the green light from the sun 550nm would be red shifted by +0.0008nm. That little red shift wouldn't be noticeable. However, as the sun sets there's a lot more atmosphere in the way, which scatters blue light more than red light (Why the sky is blue). Also in a sunrise you are moving towards the sun, so sunrises would be blue! :P

[–] [email protected] 1 points 2 months ago (1 children)

Are you sure those numbers are right? The proportions of 550nm/0.08nm and c/461m/s are very different.

[–] [email protected] 3 points 2 months ago

Oops you're right missed a few zeros.

[–] [email protected] 4 points 2 months ago

Dunno, I'm still waiting for HL3 so I haven't played that expansion yet