Earth has blue skies and red sunsets. Mars has red skies and blue sunsets.

The sky on Earth is blue because gas molecules reflect blue light. Earth sunsets look red because all the blue light has already been filtered out.

The sky on Mars is red because dust particles reflect red light. Martian sunsets look blue because all the red light has already been filtered out.

Two planets. Opposite skies.

@InvaderXan it’s really the martian sunsets when one can really grasp just how thin the martian atmosphere is

it’s a bit less evident when it’s midday there

@Awizardofearthsea Kim Stanley Robinson? I read the first one, but that was years ago.

@InvaderXan yeah. There is a part on the third book where one of the main characters gets obsessed with colors. A lot of stuff about the changing of the sky as Mars is terraformed and also lots of different reds and greens. Your posts today had me thinking of it

@Awizardofearthsea I love those books. They had a massive impact on me when I read them, though I did give up most of the way through the third cause FUCK are they dry. All Mars fiction I've read since pales in comparison...

@pfx it probably says a lot about me that I don't even think they are that dry, lol. I've read them, ah, repeatedly. They are what introduced me to a a lot of ideas about alternative (non-capitalist) political economy. The third one is the weakest though, a lot of people never finish it

@Awizardofearthsea oh i was fascinated, gripped, entranced. but i still think of them as quite hard work. they're written by a scientist and it shows even though all aspects of the worldbuilding and character development and concepts are amazing and mind blowing

@pfx Yeah, sorry, my intent was not to sound conceited or anything, more to illustrate my own dryness, lol. They're good shit in any case

@jasonscheirer @InvaderXan @anarchiv I thought the red martian skies were tinted in post, rather than actually that way; my understanding was that a clear Mars skyscape would be a 'weaker' blue than earth

Sign in to participate in the conversation
Sunbeam City 🌻

Sunbeam City is a Libertarian Socialist solarpunk instance. It is ran democratically by a cooperative of like-minded individuals.