Curiosity Rover Captures Stunning Cloud Formation on Mars

In Mars' thin, dry atmosphere, cloudy days are uncommon. Clouds are most common around the planet's equator during the coldest part of the year when Mars' oval-shaped orbit takes it the furthest from the Sun. Scientists detected clouds gathering above NASA's Curiosity rover one full Martian year ago-two Earth years-earlier than planned.

He went on to say that these clouds are among the planet's most colorful features. The colors might be seen with the naked eye if you were sky-gazing near to Curiosity, albeit they would be dim.

"The hues that show up always amaze me: reds and greens, blues and purples," Lemmon added. "It's incredible to see anything bright and colorful on Mars."

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