This is an alphabetical list of named rocks (and meteorites) found on Mars, by mission. This list is a sampling of rocks viewed, and is not an exhaustive listing. A more complete listing may be found on the various NASA mission web sites. This listing does not include Martian meteorites found on Earth. Names for Mars rocks are largely unofficial designations used for ease of discussion purposes, as the International Astronomical Union's official Martian naming system declares that objects smaller than are not to be given official names. Because of this, some less significant rocks seen in photos returned by Mars rovers have been named more than once, and others have even had their names changed later due to conflicts or even matters of opinion. Often rocks are named after the children or family members of astronauts or NASA employees. The name Jazzy, for example, was taken from a girl named Jazzy who grew up in Grand Junction, CO, USA. Her father worked for NASA and contributed to the findings and naming of the rocks. 1976 – Viking program: Viking 1 and Viking 2 landers Viking 1 Lander – July 20, 1976; Last Earth Contact – November 13, 1982. Viking 1 was operational on Mars for sols ( days; ). Mars landing coordinates: Viking 2 Lander – September 3, 1976; Last Earth Contact – April 11, 1980. Viking 2 was operational on Mars for sols ( days; ). Mars landing coordinates: (Raw Images - Camera/Sol and 1-JPL and 2-JPL + NASA Image Viewer.) 1997 – Sojourner rover (Mars Pathfinder) rover – July 4, 1997; Last Earth Contact – September 27, 1997. Sojourner was operational on Mars for sols ( days; ). Mars landing coordinates: (Raw Images - 1-Camera/Sol and 2-Camera/Sol and 3-Camera/Sol and 1-JPL and 2-JPL + NASA Image Viewer.) Anthill Auto Baby Otter Bama Bambam Barnacle Bill Barsoom Basket Bebob Blackhawk Book Shelf Booboo Bosco Boyle Brak Brick Broken Wall Bug Bullwinkle Bunky Cabbage Patch Calvin Cardiac Hill Casper Chimp Clumk Contour Couch Cradle Darth Vader Desert Princess Dilbert Dilbert's Boss Dogbert Dragon Duck Elvis Ender Flat Top Flipper Flute Top Frog Froggy Garfield Garibaldi Garrak Geordi Ginger Goldilocks Goose Gosling Grandma Grizzly Grommit Gumby Half Dome Hamster Hardstop Hassock Hedgehog Hero Hippo Hobbs Homer Hoppy Iggie Iguana Indiana Jones Jailhouse Janeway Jazzy Jedi Jimmy Cricket Kitten Lamb Landon Little Flat Top Longhorn Lookout Lozenge Lumpy Lunchbox Mafalda Marvin