Yogi Rock is a

rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales ...

Mars Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury. In the English language, Mars is named for the Roman god of war. Mars is a terrestrial planet with a thin at ...

that was discovered during the ''

Mars Pathfinder ''Mars Pathfinder'' (''MESUR Pathfinder'') is an American robotic spacecraft that landed a base station with a roving probe on Mars in 1997. It consisted of a lander, renamed the Carl Sagan Memorial Station, and a lightweight, wheeled robot ...

'' mission in 1997, and named by Geoffrey A. Landis. The rocks found on the mission were named after famous icons and figures, and Yogi Rock was thought to resemble the head of a bear looking away from the spacecraft. As a result, it was named for the famed cartoon character

Yogi Bear Yogi Bear is an anthropomorphic animal character who has appeared in numerous comic books, animated television shows and films. He made his debut in 1958 as a supporting character in '' The Huckleberry Hound Show''. Yogi Bear was the first ...

. The rock was the first on Mars found to be made of

basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...

, which suggests previous

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

activity in the region as basalt is an

igneous rock Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma o ...

. The smoothness of the surface also suggested the past existence of water in the region. Yogi was also the first large rock reached by the ''Sojourner'' rover and was analyzed by an alpha proton X-ray spectrometer to determine its composition. Images of ''Sojourner'' approaching Yogi used in the opening credits of ''

Star Trek: Enterprise ''Star Trek: Enterprise'', titled simply ''Enterprise'' for its first two seasons, is an American science fiction television series created by Rick Berman and Brannon Braga. It originally aired from September 26, 2001, to May 13, 2005 on Uni ...

'' made that television program the first science fiction television or film production to use footage taken on another planet. Yogi Rock

References

External links

* {{Portal bar, Solar System Rocks on Mars Mars Pathfinder

See also

References

External links