Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. These brightly reflecting fields of snow or frost are on the slopes of a crater rim in the northern hemisphere of Mars . They are 500 meters or so long and have lasted through about eight months of the Red Planet's spring and summer weather . Of course, a vacation on the Red Planet could still offer some advantages to skiing and snowboarding enthusiasts. Happy April Fools day from APOD .
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