Ancient volcanic ash seen blowing across Mars in new spacecraft images

Europe's Mars orbiter has captured high-resolution images of an ancient sea bed on the Red Planet, revealing that Mars' appearance can change over a matter of decades. The High Resolution Stereo Camera on the veteran Mars Express mission, which launched all the way back in 2003, recently captured new views of Utopia Planitia, which is a vast northern lowland plain spanning 2,100 miles (3,300 kilometers). …