Valley Networks in the Ancient Martian Highlands
Summary
This image from NASA Mars Reconnaissance Orbiter spacecraft the valley networks on Mars are terrains eroded by flowing water billions of years ago. Where bedrock is well exposed, a variety of colors due to altered minerals and polygonal patterns.
NASA/JPL-Caltech/Univ. of Arizona
Tags
Date
18/05/2016
Source
NASA
Copyright info
Public Domain Dedication (CC0)