The most widely accepted theory of life on Mars is that of the recently conceived primitive, or microscopic, life may have existed on early Mars. "A NASA research team at the Johnson Space Center and at Stanford University has found evidence that strongly suggests primitive life may have existed on Mars more than 3.6 billion years ago". Many meteorites have landed on earth, but only 12 are believed to have originated on Mars. These 12 were determined to be from Mars based on comparisons with the 1970's Viking mission's findings on the analysis of the Red Planet's rock and soil. "The conclusive evidence that the SNC meteorites originat

The possibility of future life on Mars is debatable. While unmanned missions have already started as many as 20 years ago with the Viking mission, and the recent Pathfinder mission, many more are in the works. Mars Climate Orbiter was recently released into space enrooted to Mars. Its mission is to study the surface and atmosphere of Mars. Mars Polar Lander will settle near Mars's southern ice cap - thought to be frozen water and carbon dioxide - and take samples with a robotic arm. Two small probes will be dropped into the ground to search for water. We could see a round trip by 2005. A Lander will head for a promising landing site from earlier missions. Its rover will collect the rocks and soil samples cached by an old rover. Samples will be brought back to Earth by 2008.

The most compelling evidence supporting the findings was the location of the carbon compounds, plus unusual mineral phases that are products of primitive microscopic or

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Approximate Word count = 643
Approximate Pages = 3 (250 words per page double spaced)