The Mars Reconnaissance Orbiter (MRO) is a NASA spacecraft launched in 2005 that has been orbiting Mars since 2006. It conducts high-resolution imaging and analysis of the planet’s surface, subsurface, and atmosphere, searching for signs of past water and identifying potential landing sites for future missions.
Source: science.nasa.gov
18/07/2018

What is creating these dark streaks on Mars? No one is sure. Candidates include dust avalanches, evaporating dry ice sleds, and liquid water flows. What is clear is that the streaks occur through light surface dust and expose a deeper dark layer. Similar streaks have been photographed on Mars for years and are one of the few surface features that change their appearance seasonally. Particularly interesting here is that larger streaks split into smaller streaks further down the slope. The featured image was taken by the HiRISE camera on board the Mars-orbiting Mars Reconnaissance Orbiter (MRO) several months ago. Currently, a global dust storm is encompassing much of Mars.