30 January 2014, 01:10 PM ET
Comet Siding Spring will approach within 86,000 miles of Mars on Oct. 19, potentially putting on a great show for NASA's Red Planet spacecraft. But the dust shed by the comet may also endanger the agency's Mars orbiters.
30 January 2014, 06:45 AM ET
Astrobiologists are developing 'intelligent' instruments that could help future robotic explorers make their own decisions about where and how to collect data on Mars and other solar system bodies.
22 January 2014, 07:28 AM ET
The 58 proposals are double the usual number submitted during such instrument competitions, NASA officials said. The agency has begun reviewing the ideas and expects to choose the final science gear for the 2020 Mars rover in the next five months.
14 January 2014, 02:35 PM ET
Mars Express — the first European Space Agency spacecraft built to investigate another planet — has been snapping color and 3D images of Mars for 10 years.
09 January 2014, 04:22 PM ET
The 1-ton Curiosity rover and its tracks are visible in a new image, which was taken by the High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance Orbiter on Dec. 11, 2013 and just released today (Jan. 9).
31 December 2013, 09:16 AM ET
From a new rover on the moon, to the most powerful digital camera ever built, space will be buzzing with human activities in 2014.
20 December 2013, 02:55 PM ET
Engineers are gearing up to perform a check of the Mars rover Curiosity's six wheels, which have accumulated a lot of wear and tear during the robot's 16 months on the Red Planet. Future routes may seek out relatively smooth ground to reduce wheel wear.
09 December 2013, 12:49 PM ET
The Mars Science Laboratory radiation detector, in operation for over a year on the Red Planet, is showing levels that are manageable for human exploration but the planet has not been hit with any big solar storms during this time.
09 December 2013, 12:01 PM ET
A mission consisting of a 180-day cruise to Mars, a 500-day stay on the Red Planet and a 180-day return flight to Earth would expose astronauts to a cumulative radiation dose of about 1.01 sieverts, Curiosity's measurements suggest.
09 December 2013, 12:01 PM ET
NASA's Curiosity rover has found evidence of an ancient Martian lake that could have supported life for perhaps millions of years. This lake likely existed 3.7 billion years ago, suggesting that Mars was habitable more recently than thought.
09 December 2013, 11:46 AM ET
NASA's Mars rover, Curiosity, discovered that the Gale Crater once harbored an ancient lake theoretically capable of hosting microbes.
06 December 2013, 06:12 AM ET
NASA's Mars rover Curiosity has passed another scientific milestone in its quest to determine the makeup of Mars. The six-wheeled robot fired its 100,000th rock-zapping laser beam on the Red Planet, NASA announced today (Dec. 5).
26 November 2013, 07:46 AM ET
The 1-ton Curiosity rover resumed science operations on Saturday (Nov. 23), six days after mission engineers noticed an odd voltage change and stood the robot down to investigate.
21 November 2013, 07:12 PM ET
NASA's Mars rover Curiosity has stopped gathering data for a few days while engineers investigate an electrical problem that cropped up on Sunday. The suspected culprit is a "soft short," a sort of electrical leak through partially conductive material.
19 November 2013, 02:21 PM ET
NASA's Mars rover Curiosity is headed for a cluster of strange buttes that have been newly named in honor of Bruce Murray, a pioneer of planetary geology, who died earlier this year.
14 November 2013, 12:14 PM ET
The path the Mars Science Laboratory has taken, started in the plains of the Gale crater and ultimately will makes its way through rough roads on the way to a Mount Sharp climb. Curiosity project scientist John Grotzinger explains.
12 November 2013, 06:34 PM ET
The car-size Curiosity rover went into safe mode Thursday, a few hours after receiving a software update from its handlers on Earth. But mission engineers identified and fixed the problem, allowing Curiosity to resume normal operations on Sunday.
11 November 2013, 05:37 PM ET
Curiosity rebooted its software on Thursday, shortly after its handlers had uploaded new flight software to the 1-ton rover. It was the first time Curiosity had experienced such a fault-related reboot since landing on Mars in August 2012.
30 October 2013, 02:46 PM ET
On Monday, Curiosity took some scouting photos of an outcrop called "Cooperstown" from about 262 feet (80 meters) away. Researchers plan to investigate Cooperstown soon, putting the rover's arm-mounted science gear to use for the first time since Sept. 22
24 October 2013, 08:00 AM ET
A prototype of Europe's planned ExoMars rover, dubbed Bridget by its control team, spent several days working in Chile as part of the Sample Field Acquisition Experiment with a Rover (SAFER) trial between Oct. 7 and 13.
19 October 2013, 10:12 AM ET
Some pieces of rock that fell to Earth from space are indeed from Mars, new measurements reveal.
17 October 2013, 11:10 AM ET
Planetary scientist Jim Bell recently shared nearly 10 years' worth of photos from NASA's Spirit, Opportunity and Curiosity rovers, which have shed a great deal of light on the Red Planet's wetter and warmer past.
15 October 2013, 11:49 AM ET
A penny on Mars has grown rich with red dust while riding on a NASA rover. NASA officials recently revealed that the red cent is now covered in Mars dust, despite being mounted vertically on the space agency's Curiosity rover for the past 14 months.
27 September 2013, 12:47 PM ET
A toxic chemical in Martian dirt may obscure scientists' search for extraterrestrial life. Perchlorates on the Red Planet may cause reactions in Curiosity's soil samples that destroy organic compounds, researchers say.
26 September 2013, 02:01 PM ET
Future Mars explorers should be able to get all the water they need out of the red dirt beneath their boots, a new study suggests. NASA's Mars rover Curiosity has found that surface soil on the Red Planet contains about 2 percent water by weight.
24 September 2013, 06:02 PM ET
The 1-ton Curiosity rover paused to examine a few rocks late last week, making the first of five planned science stops en route to the 3.4-mile-high Mount Sharp. The break was fruitful, returning further signs of long-ago flowing water.
20 September 2013, 11:23 AM ET
The Mars Science Laboratory's navigation technology allows controllers to simply determine a destination and let the rover figure out how to drive there. The software searches for obstacles and holes, then safely avoids them.
11 September 2013, 11:27 AM ET
TextureCam, a technology whose development is led by NASA's Jet Propulsion Laboratory, is designed to take pictures of rocks in 3-D and prioritize the ones that are most scientifically interesting. The smart camera could be used on Mars or more distant lo
10 September 2013, 04:27 PM ET
NASA's Mars rover Curiosity performed its longest one-day drive yet on Sept. 5, putting it within striking distance of an interesting patch of rocks called Waypoint 1 — a point on its approximately 5.3-mile (8.6 kilometer) trek that signifies the 1/5 poin
06 September 2013, 02:32 PM ET
NASA's Curiosity rover has captured two stunning videos of solar eclipses from the surface of Mars, including one that shows the Red Planet's skies darkening above the 1-ton robot. Curiosity recorded the eclipses on Aug. 19 and Aug. 20.
06 September 2013, 11:32 AM ET
The Mars Science Laboratory captured imagery of Mars' moon Phobos eclipsing the Sun on August 19th, 2013. It also captured the shadow cast by the eclipse.
05 September 2013, 08:37 PM ET
The Mars Science Laboratory had its sights set on the Sun when Phobos passed directly in front of it.
04 September 2013, 03:55 PM ET
This space wallpaper is a comparison of how big the moons of Mars appear to be, as seen from the surface of Mars, in relation to the size that Earth's moon appears to be when seen from the surface of Earth.
30 August 2013, 11:14 AM ET
This space wallpaper shows part of a set of three images revealing views three seconds apart as the larger of Mars' two moons, Phobos, passed directly in front of the sun as seen by NASA's Mars rover Curiosity.
29 August 2013, 01:40 PM ET
NASA's Mars rover Curiosity has captured the sharpest-ever images of a solar eclipse as seen from the Red Planet. The 1-ton robot snapped pictures as Phobos, the larger of Mars' two tiny moons, blotted out much of the solar disk on Aug. 20.
29 August 2013, 08:20 AM ET
The 1-ton Curiosity rover used autonomous navigation for the first time on Tuesday. The robot will likely use this "autonav" capability more and more as it continues the long trek toward the base of Mars' huge Mount Sharp, NASA officials said.