Latest valley networks Stories
Orographic precipitation, or rain and snow that falls when moist prevailing winds are forced upwards by mountain ridges, appears to have played a role in the formation of some Martian valleys.
Rivers and valleys form intricate branching patterns, which have inspired some scientists to develop a theoretical understanding of river-network geometry.
New research adds to the growing body of evidence suggesting the Red Planet once had an ocean.
A new study suggests that ancient features on the surface of Mars called valley networks were carved by recurrent floods during a long period when the Martian climate may have been much like that of some arid or semiarid regions on Earth.