Cracks in Martian rock point to watery past
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LOS ANGELES - NASA&#39;s Mars rover, Opportunity, has found more signs that rocks on the Red Planet were once submerged in water. Data sent by Opportunity suggest a crater was drenched a second time after drying out, scientists said.
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Spirit, one of the two rovers exploring Mars, has discovered the first rock on the planet that scientists say could have formed only in water - - but whether the water was flowing, or lay like a shallow sea that came and went, remains unknown, the mission
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THE Mars rover Opportunity has found new evidence of past existence of water on the Red Planet, NASA said today. Opportunity keeps finding new clues of past water as it continues probing Mars, said mission
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LOS ANGELES: New photographs from space suggest that water occasionally flows on the frigid surface of Mars, raising the tantalizing possibility that the Red Planet is hospitable to life, scientists reported.
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Nasa says it has found "compelling" evidence that water flowed recently on the Martian surface.
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Gostar Klingelhofer of Johannes Gutenberg University reported that NASA&#39;s Mars rover Spirit found a rock that had sizable amounts of an iron-containing mineral associated with water.
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LOS ANGELES - NASA&#39;s Spirit rover has found more evidence of past water on the hills of Mars, while its twin, Opportunity, has observed a field of dunes inside a crater.
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By ALICIA CHANG, THE ASSOCIATED PRESS  LOS ANGELES  A provocative new study of photographs taken from orbit suggests that liquid water flowed on the surface of Mars as recently as several years ago, raising the possibility that the Red Planet could harbor an environment favorable to life.
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A new hypothesis could explain how the climate of early Mars became warm enough to support oceans.
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NASA's Opportunity rover has determined that a strange bubbly rock on the surface of Mars is actually a meteorite, offering a new clue into how the martian surface is made and remade.
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PASADENA, Calif. - A patch of Martian soil analyzed by NASA's rover Spirit is so rich in silica that it may provide some of the strongest evidence yet that ancient Mars was much wetter than it is now.
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An orbiting spacecraft has sent back new evidence for the presence of water on Mars.
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Images from the spacecraft show two craters that may have been altered by the recent flow of water
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BEIJING, Aug. 19 (Xinhuanet) -- NASA&#39;s Mars rovers have uncovered more clues about how water shaped the Red Planet, scientists said Wednesday.
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NASA released images today that reveal water likely flowed through Martian gullies within the past few years, providing a "squirting gun" of liquid water's presence on the red planet.
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Sept. 8, 2004 - Mars may be cold, dry and dusty today but it once had a watery climate that lasted for much of its history, according to a study published in the British science journal Nature on Thursday.
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NASA experts said they have detected evidence that liquid water existed on the surface of Mars in recent years, giving weight to hopes that signs of life on the Red Planet could still be found.