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#Astronauts 👨‍🚀 travelling to #Mars would encounter #radiation ☢️ levels higher than humans have ever experienced, and be exposed to them for much longer.

To protect them, the #spacecraft would either have to be much bulkier, making launches expensive and difficult, or be made of more efficient #shielding 🛡️ materials. https://www.skyatnightmagazine.com/space-missions/how-will-humans-survive-the-journey-to-mars

#RadiationProtection#LunarGateway#Artemis#Moon

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Not to spoil the novel's plot, but Nazis where on the #Moon way earlier than Nazi Musk was even a molecule in this world, according to #Heinlein. They didn't fare well there, either.

So, Musk & Co are now trying a #Mars grift…

Robert A. Heinlein, 𝑅𝑜𝑐𝑘𝑒𝑡 𝑆ℎ𝑖𝑝 𝐺𝑎𝑙𝑖𝑙𝑒𝑜, 1947

https://en.wikipedia.org/wiki/Rocket_Ship_Galileo

#SciFi#Solarocks#Space

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The Perseverance rover captured some pretty massive dust devils earlier today. That large one in the foreground was at least 300m high.
EDIT: corrected height estimate from 500 to 300m.
https://flic.kr/p/2qHbPLV

NASA/JPL-Caltech/Simeon Schmauß

#planetaryscience #mars #mars2020 #nasa #perseverance #dustdevil

20 frame animation showing a mostly flat terrain on Mars with a couple craters and a few hills towards the horizon. Three dust devils can be seen, a large one in the foreground is moving in an lefthand arc and shows significant rotation. It also casts a shadow onto the ground.

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Here I add my manipulated version of it for easier comparison with the others. Look at the original - it's north up, not south up. The old astronomical convention was dropped. Longitudes go from 0 to 180 east and west from the prime meridian (still using the 1840 version of zero longitude). Our familiar names are on display. Compare Syrtis Major's longitude here and on the previous map - this one is 10 degrees too far east. Oops! #maps#Mars