On May 19, 2005, NASA's Mars Exploration Rover Spirit captured this stunning view as the Sun sank below the rim of Gusev crater on Mars. This Panoramic Camera mosaic was taken around 6:07 in the evening of the rover's 489th Martian day, or sol.
With the Curiosity and Opportunity rovers making all the headlines these days, we can't forget the Spirit rover that provided a trove of scientific information and paved the way for Curiosity, before falling silent in March of 2010. Photo of sunset on Mars taken by NASA's Spirit rover in 2005. The promised warranty on the Spirit rover was 90 Martian days (or "sols"). It ended up lasting more than 2,200 sols and gave a window into Mars' early and wet history.