Why it's so special: These odd, fan-like features on the surface of Mars are geysers of gas and dust near the planet's south pole that are visible only in springtime on the Red Planet. This image was ...
Winter on Earth can be brutal, but NASA has discovered the season is two years long on Mars, with minus 190-degree Fahrenheit lows and cube-shaped snowflakes. Crazier still: When spring finally comes, ...
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