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Latest Mars Reconnaissance Orbiter Stories

be8960a3a5e56bc865b3ba052eb956b8
2008-03-06 11:05:00

Scientists studying images from The University of Arizona-led High Resolution Imaging Experiment camera on NASA's Mars Reconnaissance Orbiter have discovered never-before-seen impact "megabreccia" and a possibly once-habitable ancient lake on Mars at a place called Holden crater.The megabreccia is topped by layers of fine sediments that formed in what apparently was a long-lived, calm lake that filled Holden crater on early Mars, HiRISE scientists say."Holden crater has some of the...

59a718f2d21d74c0680cc77b543690a0
2008-03-03 13:07:57

A NASA spacecraft in orbit around Mars has taken the first ever image of active avalanches near the Red Planet's north pole. The image shows tan clouds billowing away from the foot of a towering slope, where ice and dust have just cascaded down. The High Resolution Imaging Experiment (HiRISE) on NASA's Mars Reconnaissance Orbiter took the photograph Feb. 19. It is one of approximately 2,400 HiRISE images being released today. Ingrid Daubar Spitale of the University of Arizona, Tucson, who...

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2008-02-29 08:15:00

Liquid water has not been found on the Martian surface within the last decade after all, according to new research. The finding casts doubt on the 2006 report that the bright spots in some Martian gullies indicate that liquid water flowed down those gullies sometime since 1999. "It rules out pure liquid water," said lead author Jon D. Pelletier of The University of Arizona in Tucson. Pelletier and his colleagues used topographic data derived from images of Mars from the High Resolution...

819f53c5cfaa532ead5e45e11174d3251
2008-02-28 13:20:00

Three Mars spacecraft are adjusting their orbits to be over the right place at the right time to listen to NASA's Phoenix Mars Lander as it enters the Martian atmosphere on May 25. Every landing on Mars is difficult. Having three orbiters track Phoenix as it streaks through Mars' atmosphere will set a new standard for coverage of critical events during a robotic landing. The data stream from Phoenix will be relayed to Earth throughout the spacecraft's entry, descent and landing events. If...

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2008-01-23 15:09:01

Mars has an ethereal, tenuous atmosphere at less than 1 percent the surface pressure of Earth, so scientists working on The University of Arizona's High Resolution Imaging Experiment, or HiRISE, are challenged to explain the complex, wind-sculpted landforms they're now seeing in unprecedented detail. The HiRISE camera on NASA's Mars Reconnaissance Orbiter, the most powerful camera to orbit another planet, can see 20-inch-diameter features while flying at about 7,500 mph between 155 and 196...

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2007-12-11 14:45:00

SAN FRANCISCO - Scrutiny by NASA's newest Mars orbiter is helping scientists learn the stories of some of the weirdest landscapes on Mars, as well as more familiar-looking parts of the Red Planet. One type of landscape near Mars' south pole is called "cryptic terrain" because it once defied explanation, but new observations bolster and refine recent interpretations of how springtime outbursts of carbon-dioxide gas there sculpt intricate patterns and paint seasonal splotches. "A lot of Mars...

1b553782525b493a7b9505e97a54442e1
2007-11-27 06:00:00

Hi Mom! Spirit, the dusty Mars rover twin with the bad leg, shows up in a photo taken by the University of Arizona's orbiting HiRISE camera as the rover heads for a safe winter refuge. The long-lived twin NASA rovers Spirit and Opportunity are on opposite sides of Mars, sniffing around and taking pictures as they creep about the planet. They relay their findings through one of the Mars orbiting satellites that sends signals back to Earth, where they are picked up by the Deep Space Network...

6c5c6dacf376b41e4ec689ba164ab05d1
2007-10-20 08:35:00

Scientists scouting potential landing sites for NASA's next Mars rover mission are using new data from a powerful mineral-mapping camera to narrow the site selection. When NASA Mars Program officials and members of the Mars science community gather in California next week to pare down the list of candidate landing sites for the 2009 Mars Science Laboratory (MSL), they can refer to 125 new images from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM). The images and accompanying...

0e82d3f3123f2d1bbddf20e2e482d0681
2007-10-10 17:49:05

PASADENA, CALIF. -- Less than a year since beginning the prime science phase of its mission, NASA's Mars Reconnaissance Orbiter has passed a mission-success milestone for the amount of data returned. The data-volume target of 26 terabytes, which was surpassed this week, is equivalent to about 5,000 CD-ROMs full and exceeds the total from all other current and past Mars missions combined. The biggest shares of the data come from two of the orbiter's six science instruments: the High Resolution...

c6f53de782d160df71548a09c3ec7ca31
2007-09-20 17:25:00

PASADENA, Calif. -- NASA's Mars Reconnaissance Orbiter is examining several features on Mars that address the role of water at different times in Martian history. Features examined with the orbiter's advanced instruments include material deposited in two gullies within the past eight years, polar ice layers formed in the recent geologic past, and signs of water released by large impacts when Mars was older. Last year, discovery of the fresh gully deposits from before-and-after images taken...