25 April 2014, 11:56 AM ET
NASA's Curiosity Mars rover has captured the first image of asteroids as seen from the Red Planet surface. Curiosity's historic picture of the Martian sky shows Ceres and Vesta, two of the biggest bodies in the solar system's asteroid belt.
25 April 2014, 07:27 AM ET
In March 2014, scientists gave the public a taste of the Mars-analog research they're doing in California's Death Valley National Park.
25 April 2014, 07:12 AM ET
Last month, researchers took the public on a tour of some Martian analog sites in California's Death Valley National Park as part of MarsFest 2014.
23 April 2014, 06:41 AM ET
In order for humanity to survive into the distant future, we need to visit and even colonize other worlds, according to NASA chief Charles Bolden.
22 April 2014, 07:01 AM ET
Sending astronauts to the surface of Mars has been a longtime goal for NASA and other space exploration agencies. That Martian goal takes center stage in a Washington, D.C. conference, and you can watch it live online.
22 April 2014, 03:40 AM ET
NASA has long held the lead in the exploration of Mars, and that trend will continue, says NASA administrator Charles Bolden.
21 April 2014, 03:47 PM ET
Opportunity has been given a new lease on life after the Red Planet gave the tenacious Mars rover a power-boosting spring clean, blasting dust off its solar panels. Opportunity is still going strong more than 10 years after landing on Mars.
16 April 2014, 05:34 PM ET
Stargazers took a set of stunning images of Mars during a fortuitous alignment that occurs every two years. The bright rust coloration of Mars is known for is due to iron-rich minerals.
14 April 2014, 02:01 AM ET
Monday features the launch of SpaceX's third contracted cargo mission to the International Space Station, a great view of a superbright Mars and a total eclipse of the moon overnight.
10 April 2014, 07:00 AM ET
The enormous collision occurred 3.26 billion years ago and involved an asteroid 23 to 36 miles across — four to six times wider than the dino-killing space rock. The impact created a crater about 300 miles wide, researchers said.
09 April 2014, 05:17 PM ET
This is not the first time that people have seen more in Curiosity's images than is actually there. In September 2012, for example, the rover photographed a landscape that appeared to contain a rodent crouching between two rocks.
08 April 2014, 05:41 PM ET
NASA’s Mars rover Curiosity has begun science operations in a new area of study nicknamed “the Kimberly” after the Western Australian region.
08 April 2014, 02:30 PM ET
Though UFO enthusiasts may beg to differ, mission team members say that a bright flash of light visible in two images taken by the Curiosity rover on April 2 and April 3 almost certainly has a perfectly ordinary explanation.
08 April 2014, 07:00 AM ET
Scientists have begun realizing that spaceflight can cause serious and perhaps permanent vision problems in astronauts. NASA is working hard to understand the issue, which could present a major hurdle to mounting manned missions to Mars.
08 April 2014, 07:00 AM ET
Mars and the sun are directly opposite each other in Earth's sky today, which is why the formation is known as an opposition of Mars. You can watch two live shows about the Mars opposition here on Space.com beginning at 7 p.m. EDT tonight.
07 April 2014, 05:27 PM ET
Planets abound in the night sky this month, which affords good views of Venus, Jupiter and Neptune. And on Tuesday (April 8), Mars will make its closest approach to Earth in more than six years.
07 April 2014, 03:14 PM ET
NASA should set up a clear set of ethical rules regarding the health of astronauts on long-duration spaceflights — such as a trip to Mars — in the near future, according to a panel of health and ethics experts.
06 April 2014, 08:36 AM ET
The 1-ton Curiosity rover trundled 98 feet (30 meters) on Wednesday (April 2), topping a small hill that affords a good view of the surrounding area, which the mission team has dubbed "the Kimberley," officials said.
04 April 2014, 08:09 PM ET
To survive on Mars, astronauts may need to rely on an usual diet.
04 April 2014, 04:15 PM ET
Mars will be exactly opposite the sun in the sky in a rare cosmic alignment set to take place Tuesday (April 8).
03 April 2014, 07:00 AM ET
Scientists and engineers at NASA's Ames Research Center in Moffett Field, Calif., are drawing up a low-cost mission concept that would send a robotic spacecraft to Phobos or Deimos, one of Mars' two tiny satellites.
01 April 2014, 02:00 PM ET
April features eclipses of the sun and moon, a meteor shower and good opportunities to see Vesta and Ceres, the two biggest bodies in the main asteroid belt between Mars and Jupiter.
01 April 2014, 10:18 AM ET
Calling all space cadets: Earthwatch wants volunteers to help search for life on Mars in what has to be the most entertaining April Fools' joke you'll see this year.
31 March 2014, 02:48 PM ET
Red Mars' close encounter with Earth, a 'red moon' total lunar eclipse (visible from North America) and the Lyrid meteor shower will highlight the month of April 2014. Also, the mornings and evenings will showcase Jupiter, Saturn and Venus.
31 March 2014, 09:50 AM ET
Mars and Earth will only be 92 million miles apart at closest encounter in April 2014, called ‘opposition’. Mars will appear red-gold, glowing brighter than first magnitude stars. Only Jupiter, the Moon and Venus before sunrise will be brighter.
28 March 2014, 03:18 PM ET
Twice in the past two weeks the Mars rover Opportunity has experienced "cleaning events" that have blown some of the rusty powder away, allowing more sunlight to fall on the solar arrays, giving the six-wheeled rover a seasonal power-up.
27 March 2014, 03:09 PM ET
A new Hubble image, captured on March 11, shows what appear to be two jets of dust coming off the nucleus of Comet Siding Spring, which on Oct. 19 will miss Mars by just 84,000 miles — about one-third the distance between Earth and the moon.
27 March 2014, 07:11 AM ET
NASA's plan to capture an asteroid and park it near the moon is only one step on the way to Mars, NASA chief Charles Bolden said Wednesday (March 26). The space agency is planning an ambitious mission to send a robotic spacecraft to an asteroid.
25 March 2014, 02:27 PM ET
Sandstone layers with varying resistance to erosion are evident in this space wallpaper recorded by the Mast Camera on NASA's Curiosity Mars rover on Feb. 25, 2014, about one-quarter mile (about 400 meters) from a planned waypoint called "the Kimberley."
25 March 2014, 07:04 AM ET
Curiosity is just 282 feet north of a site called "the Kimberley," where four different types of terrain intersect. The rover's handlers are keen to study the Kimberley rocks and may even break out Curiosity's sample-collecting drill at the site.
24 March 2014, 04:32 PM ET
Volunteers with no astronomy experience can pick out craters on the moon as accurately as a researcher with five to 50 years' experience, a new study reports. The finding could give a further boost to the use of citizen scientists in research projects.
20 March 2014, 02:41 PM ET
A NASA spacecraft has spotted a big Martian gully that formed in just the past three years or so. While the gully looks a lot like river channels here on Earth, it likely was carved out by carbon dioxide rather than by flowing water.
20 March 2014, 10:39 AM ET
NASA's most powerful eye in the sky above Mars has bounced back from a recent computer glitch and resumed full duties observing the Red Planet.
18 March 2014, 05:37 PM ET
If you have clear weather this evening, you may catch a view of a waning gibbous moon accompanied by a very bright and colorful planet (Mars) to its upper left and a bright blue star (Spica) to its upper right.
18 March 2014, 03:44 PM ET
This color picture of the Martian horizon was taken by Viking 1 on July 24, 1976.
11 March 2014, 04:01 PM ET
NASA's Mars Reconnaissance Orbiter switched over to safe mode after unexpectedly swapping from one main computer to another. The glitch has suspended science operations, but mission officials are confident the probe can return to service soon.