30 January, 1998. The Pathfinder spacecraft landed on Mars on July
4, 1997 in Ares Vallis one of the Martian flood channels. The
rover showed the existence of different kinds of rocks (both sulfur
and silicate rich), and that the silicates are similar to those
found in the Andes of South America. The spacecraft confirmed that
water once flowed in great abundance in the Ares Valley. The craft
went off the air September 27, 1997.