Water on Mars
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Although very small amounts of liquid water may occur transiently on the surface of Mars, limited to traces of dissolved moisture from the atmosphere and thin films, large quantities of ice are presen
Mars contains water, though mostly as subsurface permafrost. Surface water is readily visible at some places, such as the ice-filled Korolev Crater, near the north polar ice cap.
Mars canals illustrated by astronomer Percival Lowell, 1898.
History of water on Mars. Numbers represent how many billions of years ago.
Mars meteorite ALH84001.
Life on Mars
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The possibility of life on Mars is a subject of interest in astrobiology due to the planet's proximity and similarities to Earth. To date, no conclusive evidence of past or present life has been found
Water on Mars
…microbial life billions of years ago, no definite evidence of life, past or present, has been found on Mars. The best potential locations for discovering life on Mars may be in subsurface environments. A large amount of underground ice, equivalent to the volume of water in Lake Superior, has been found under Utopia…
Alga crater is thought to have deposits of impact glass that may have preserved ancient biosignatures, if present during the impact.
Martian terrain