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PHOTO INDEX OF PRIMARY TARGETS ASTEROIDS COMETS EARTH JUPITER KUIPER BELT MARS MERCURY METEORITES NEPTUNE OORT CLOUD PLUTO SATURN SOLAR SYSTEM SPACE SUN URANUS VENUS ORDER PRINTS OTHER PHOTO INDEXES ALL TARGETS PHOTO CATEGORIES SCIENCEVIEWS AMPHIBIANS BIRDS BUGS FINE ART FOSSILS INDIAN INDIAN MAMMALS OTHER PARKS PLANTS RELIGIOUS REPTILES ROCKS & MINERALS SCIENCEVIEWS PRINTS

Life from Mars: Video Cut 1 Target Name:   Mars Spacecraft:   Viking orbiter Produced by:   NASA Copyright:  Public Domain Related Document Life from Mars: Video Animations Download Options Name Type Width x Height x Frames Size marslif1.mpg MPEG 352 x 240 x ? 980K Between 3.6 billion and 4 billion years ago, when Mars was warmer and wetter, water penetrated fractures in the subsurface rock. Saturated with carbon dioxide from the Martian atmosphere, carbonate minerals were deposited in the fractures. Living organisms also may have assisted in the formation of the carbonate, and were fossilized. Then, 16 million years ago, a huge comet or asteroid struck Mars, ejecting a piece of the rock. For millions of years, the rock floated through space, falling in Antarctica 13,000 years ago as a meteorite.

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