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NASA says mysterious Mars 'jelly donut' rock no mystery, just a rock

NASA says mysterious Mars 'jelly donut' rock no mystery, just a rock

GREENBELT, Md., Feb. 14 (UPI) -- NASA says the mystery "jelly doughnut" rock on Mars that appeared to come out of nowhere was just a rock, kicked up by the Opportunity rover's wheel.
Opportunity rover still doing science after almost 10 years on Mars

Opportunity rover still doing science after almost 10 years on Mars

PASADENA, Calif., June 7 (UPI) -- NASA says its Mars Exploration Rover Opportunity, nearing its 10th anniversary on the Red Planet, is on the move again to a new study area.

NASA studies Mars' arctic soil

PASADENA, Calif., Dec. 16 (UPI) -- The U.S. space agency says martian soil its Phoenix Mars Lander collected this year is very cold and dry, but during climate cycles it might become moist.
Phoenix survives a Martian dust storm

Phoenix survives a Martian dust storm

PASADENA, Calif., Oct. 15 (UPI) -- U.S. space agency scientists say the Phoenix Mars Lander survived a weekend dust storm that temporarily lowered its solar power.
Mars Lander struggling with soil samples

Mars Lander struggling with soil samples

TUCSON, June 7 (UPI) -- NASA's Phoenix Mars Lander is having trouble placing Martian soil samples into research instruments, project officials in Arizona say.
Phoenix lifts first scoop of Martian soil

Phoenix lifts first scoop of Martian soil

PASADENA, Calif., June 3 (UPI) -- One week after landing on Mars, the U.S. space agency's Phoenix spacecraft has lifted its first scoop of Martian soil as a test of the lander's robotic arm.
NASA said possible ice spotted on Mars

NASA said possible ice spotted on Mars

HOUSTON, May 31 (UPI) -- U.S. space officials said exhaust from NASA's Phoenix spacecraft has exposed either rock or ice beneath the Mars lander.

Dust storm grounds Mars rover

ST. LOUIS, Jan. 3 (UPI) -- The upgraded Spirit rover marked its third anniversary on the Martian surface, riding out a dust storm, rover scientists in St. Louis said.

NASA rover nears Mars' Victoria crater

WASHINGTON, Sept. 7 (UPI) -- NASA's Mars rover Opportunity is closing in on what the U.S. space agency calls an overlooked and rich science trove -- a huge and geologically lush crater.

Rovers still functional 10 months on Mars

PASADENA, Calif., Nov. 5 (UPI) -- NASA officials said all the scientific tools on the two Mars Exploration Rovers are still working well, a full 10 months after they landed on the planet.

Analysis: Mars water past still mysterious

WASHINGTON, April 15 (UPI) -- The twin robotic rovers, Spirit and Opportunity, have delivered unequal measures of success in the quest for evidence of water on Mars, and the disparity has scientists puzzled and disappointed.
PHIL BERARDELLI, United Press International

Second rover finds Mars water signs

PASADENA, Calif., March 5 (UPI) -- More possible signs of water were reported on Mars Friday.
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