Another giant dust devil on Mars

Credit: NASA/JPL/University of Arizona

The Mars Reconnaissance Orbiter has taken incredible images of another giant dust devil, similar to one photographed in February, but much larger. This one, in Amazonis Planitia, is about 20 kilometres (12 miles) tall! That’s also a lot bigger than typical dust devils on Earth, more like the size of a terrestrial tornado.

There are also two animations, here and here.

Paul Scott Anderson is a freelance space writer with a life-long passion for space exploration and astronomy. He started his blog The Meridiani Journal in 2005, which is a chronicle of planetary exploration. He also publishes The Exoplanet Report e-paper. In 2011, he started writing about space on a freelance basis, and now also currently write for AmericaSpace and He has also written for Universe Today and SpaceFlight Insider, has been published in The Mars Quarterly and has done supplementary writing for the well-known iOS app Exoplanet for iPhone and iPad.