PIX4615553: Mars: Spirit returns to its base. - Detail of the panorama obtained by Spirit between 3 and 5 March 2004 when the rover was halfway between its landing site and the Bonnevile crater. Following the traces left by Spirit you can see its base, Columbia memorial station, located about 200m away. The Rover Spirit landed on Mars in the Gusev crater area, July 4, 2004 / Bridgeman Images
PIX4624547: Pluto's Atmosphere - Artist's View - Pluto's Atmosphere - Pluto's Artist's View surrounded by its thin atmosphere. In 1985 it was discovered that Pluto has an atmosphere, albeit a very tenuous one. Pluto's atmosphere arises only when it approaches closer to the Sun during its highly eccentric, 248 earth years long orbit. The atmosphere likely consists of nitrogen, methane, and carbon monoxide, which sublimate directly from Pluto's frozen surface. As Pluto's orbit moves it away from the Sun, these gases are believed to slowly precipitate back to Pluto's surface / Bridgeman Images