Blue Dunes on the Red Planet Posted on April 8, 2021 by Frank Cisco A sea of dark dunes, sculpted by the wind into long lines, surrounds Mars’ northern polar cap and covers an area as big as Texas. via NASA https://ift.tt/31WMC6e Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading... Related