Video of clouds on Mars: NASA/
JPL-Caltech/Cornell/ASU/
Texas A&M/Navigation camera

Earthbound cloud watchers will be glad to know they are not alone.

No, we are not talking about Little Green Men, although the observer scanning the skies does live on Mars.

Our fellow cloud lover is Opportunity, one of the two Mars Exploration Rovers which have been studying the history of water on that inhospitable planet since landing in 2004.

In March, Opportunity lifted its robot eyes skyward to video clouds drifting overhead, according to an update on The Planetary Society website. The clouds it captured passing over Victoria Crater look like cirrus clouds on Earth, feather-like formations composed mostly of ice crystals.

Thanks to Carole Boon for sifting through pages of scientific reports to bring us this gem.