Mars Has Never Looked More Alien in These Incredible New NASA Images
Summer in the southern hemisphere of Mars, in ultraviolet light.
Now, NASA has released new images showing three ultraviolet wavelengths, represented in red, green, and blue. The atmospheric hazes and clouds are colored white or blue, while the surface can appear tan or green.The two images were captured six months apart and showcase seasonal changes in the planet's atmosphere. The first, captured in July 2022, shows the southern hemisphere in summer, around the time of the summer solstice .
The atmosphere appears fairly clear, with clouds filling the canyons of the Valles Marineris at the top left. The extent of the southern polar ice cap, visible in stark white, is at a summer low. Water vapor can be detected at very high altitudes, driven by summer heat and dust storms. The second image was taken six months later, in January 2023. Seasons on Mars are twice as long as seasons on Earth, so that means the image was taken a little after the spring equinox in the northern hemisphere.Seasonal changes have produced many white clouds around the northern hemisphere, while a buildup of ozone shines purple.
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