— NASA (@NASA) February 19, 2014
This image was acquired by the HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter on Dec. 30, 2013
“Migratory birds and military aircraft often fly in a V-shaped formation.,” Nasa said
“The “V” formation greatly boosts the efficiency and range of flying birds, because all except the first fly in the upward motion of air — called upwash — from the wingtip vortices of the bird ahead.”
“In this image of a dune field on Mars in a large crater near Mawrth Vallis, some of the dunes appear to be in a V-shaped formation.”
“For dune fields, the spacing of individual dunes is a function of sand supply, wind speed, and topography.”
Earlier this month William Shatner Asked NASA: What’s Up with the Mystery Rock on Mars?