10 febrero 2015
NASA’s Mars Reconnaissance Orbiter passed a mission milestone of 40,000 orbits on Feb. 7, 2015, in its ninth year of returning information about the atmosphere, surface and subsurface of Mars, from equatorial to polar latitudes.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/CQpoWBF7158/150210135222.htm
