NASA's Mars Odyssey orbiter has found evidence of salt deposits.
NASA's Mars Odyssey spacecraft has discovered entrances to seven possible caves on the slopes of a Martian volcano.
03.21.07 - Scientists find dual use for extra flight hardware.
Bright blue marks a deposit of chloride (salt) minerals in the southern highlands of Mars in this false-color image, which highlights mineral composition differences.
This image provides higher-resolution views of a site where another observation indicates the presence of chloride salt deposits.
This image shows a possible cave skylight informally called "Annie," which has a diameter about double the length of a football field.
Seven very dark holes on the north slope of a Martian volcano have been proposed as possible cave skylights.