NASA's Perseverance Mars Rover

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On the plains of Jezero, the secrets of Mars' past await us! Follow for the latest news, updates, pretty pics, and community discussion on NASA and the Jet Propulsion Laboratory's most ambitious mission to Mars!

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1,500 sols on Mars - Selfie (lemmy.world)

submitted 1 week ago by [email protected] to c/[email protected]

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sol 1500 Selfie assembled from 6 overlapping Watson images

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[–] [email protected] 6 points 1 week ago (6 children)

I don't think I've ever seen the horizon on Mars, they always show the rocks and dirt. Does it get a blue sky like earth or is it perpetually that gray colour?

[–] [email protected] -4 points 1 week ago (2 children)

Fun fact, our sky isn't actually blue, but it's the reflection of the oceans in the atmosphere that gives us a "blue" sky

[–] [email protected] 9 points 1 week ago (1 children)

Lord Rayleigh disagrees, I'm afraid.

[–] [email protected] 4 points 1 week ago* (last edited 1 week ago)

The blue color of the sky is a consequence of three factors:[17]

the blackbody spectrum of sunlight coming into the Earth's atmosphere,

Rayleigh scattering of that light off oxygen and nitrogen molecules, and

the response of the human visual system.

The strong wavelength dependence of the Rayleigh scattering (~λ−4) means that shorter (blue) wavelengths are scattered more strongly than longer (red) wavelengths. This results in the indirect blue and violet light coming from all regions of the sky. The human eye responds to this wavelength combination as if it were a combination of blue and white light.

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