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.
03 September 2013, 06:42 AM ET
Tens of thousands of people are prepared to leave their families, jobs and lives behind for a one-way trip to Mars. But what sort of person would go?
01 September 2013, 01:00 PM ET
A key chemical ingredient for life may have been more abundant on early Mars than on early Earth, researchers say.
30 August 2013, 05:53 PM ET
Two Brown University scientists are a step closer to solving a four-decade old mystery about some unusual looking craters on Mars.
30 August 2013, 02:28 PM ET
Saturn, Venus, Mars and Jupiter will all be sharing the September nights' sky with the Moon, and toward the end of the month, comet ISON will line up with Mars.
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.
28 August 2013, 06:05 PM ET
We may all be Martians. Evidence is building that Earth life originated on Mars and was brought to our planet aboard a meteorite, says biochemist Steven Benner of The Westheimer Institute for Science and Technology in Florida.
28 August 2013, 07:00 AM ET
A private Mars colonization effort has fallen short of its expected number of astronaut applications but still aims to put boots on the Red Planet in 2023. With a few days left in the application process, Mars One has received about 165,000 submissions.
27 August 2013, 12:01 PM ET
Scientists are hoping to induce an unconscious state in astronauts so that they can be stored in cold capsules for long space flights. Here's how astronaut hibernation and suspended animation might one day work.
26 August 2013, 06:36 AM ET
By the time humanity is ready to put boots on Mars, the long cruise to the Red Planet may be as easy as a dream. NASA-funded scientists are investigating ways to induce hibernation in astronauts, which could make the Mars trip cheaper and more efficient.
23 August 2013, 10:27 AM ET
The deadline approaches for applications to join a one-way mission to Mars. Though the prospect is off-putting to many, it's also the dream of a lifetime to some.
22 August 2013, 12:44 PM ET
A new documentary profiles the people who are willing to make the ultimate sacrifice: leaving Earth on a one-way trip to Mars. The film, "One Way Astronaut," tells the story of the Mars One mission to send humans to Mars starting in 2023.
20 August 2013, 04:58 PM ET
NASA's Opportunity Mars rover has reached the site where it will wait out its sixth Red Planet winter. The rover is studying rocks at the foot of Solander Point, whose north-facing slope will allow the solar-powered rover to work through the coming winter
19 August 2013, 06:00 AM ET
A newly announced contest asks students to propose design concepts for the Inspiration Mars mission, a private effort that aims to launch two astronauts on a close flyby of the Red Planet in January 2018.
16 August 2013, 12:10 PM ET
The possible 'Comet of the Century' will come about 6.5 million miles away from the Red Planet, much closer than it will Earth. NASA will have its eyes on the ground and sky pointed in its direction.
15 August 2013, 05:57 PM ET
Curiosity snapped the 41 images that comprise the 30-second video on Aug. 1, becoming the first robot ever to capture a view of the two satellites — called Phobos and Deimos — eclipsing each other from the Martian surface.
15 August 2013, 05:14 PM ET
The Mars Science Laboratory used its Mast Camera to photograph the larger moon Phobos occult the smaller Deimos. 41 images taken on Aug. 1st, 2013 are compiled and time-lapsed (real-time was 55 seconds).
14 August 2013, 07:00 AM ET
Six people emerged from a space habitat on Hawaii's Big Island Tuesday, ending a four-month simulated mission designed to study how best to feed astronauts during the long trip to Mars. The HI-SEAS mission began in mid-April and lasted 118 days.
14 August 2013, 07:00 AM ET
The moon may be more of a stumbling block than a stepping stone on humanity's path to Mars. The perceived need to develop lunar infrastructure and resources first could push a manned Red Planet mission far off into the future, NASA's Harley Thronson says.
12 August 2013, 03:37 PM ET
If humanity hopes to establish a lasting presence on Mars, it will have to learn to live off the land. Ambitious exploration efforts have always aimed for self-sufficiency, but the need is especially acute when "the new world" is another planet.
09 August 2013, 11:39 AM ET
This stunning space wallpaper shows the ancient cratered southern highlands of Mars. Faint traces of a wet past are seen in the form of channels (lower center), fluidized debris around craters (bottom right) and blocks of eroded sediments (top left).
08 August 2013, 02:08 PM ET
The Hawaii Space Exploration Analog and Simulation (HI-SEAS) is nearing the end of its 120-day mission on the northern slope of Mauna Loa. Commander Angelo Vermeulen shares his thoughts about the project, and about re-entering the real world.
08 August 2013, 12:30 PM ET
Space Frontier Foundation's 'There Is Another Way' promotes a private-powered program, from LEO to Lunar-fueled 'gas-stations' to sustainable Mars transit.
07 August 2013, 07:00 AM ET
It’s been a year since NASA's Curiosity rover touched down on Mars, and the mission's science and engineering teams celebrated the occasion in style here at NASA's Jet Propulsion Laboratory on Monday (Aug. 5).
06 August 2013, 03:33 PM ET
In its first year on Mars, NASA's Curiosity rover has made discoveries that should help pave the way for human missions to the Red Planet in the next few decades. The robot's landing success and radiation measurements should be key, Charles Bolden said.
06 August 2013, 12:24 PM ET
NASA’s Mars rover Curiosity landed on the Red Planet on Aug. 5, 2012 in a dazzling space engineering feat. One year later, the rover has found evidence that Mars was once habitable, had running water and more.
06 August 2013, 07:00 AM ET
Today NASA marks the one-year anniversary of Curiosity's dramatic landing, and you can watch the celebrations online. NASA officials, rover team members and astronauts will discuss the mission in two events, starting at 10:45 a.m.
06 August 2013, 07:00 AM ET
Grotzinger, a geologist at the California Institute of Technology in Pasadena, discusses the highlights of Curiosity's mission so far, what the rover may discover in the future and why it didn't set out for its main destination right away.
06 August 2013, 07:00 AM ET
A former astronaut's rocket company is raising money via Kickstarter to make a short documentary that explains the technology behind a propulsion system that could bring people to Mars in just over a month.
05 August 2013, 06:05 PM ET
As NASA's Curiosity rover celebrates one year on Mars, the space agency has begun final preparations for the launch of its next Red Planet mission later this year. The MAVEN spacecraft arrived at NASA's Kennedy Space Center in Florida on Friday.
05 August 2013, 05:51 PM ET
In celebration of the Mars Science Laboratory's one year birthday on Mars, engineers at Goddard Space Flight Center used the Sample Analysis at Mars (SAM) instrument to play Happy Birthday to Curiosity.
05 August 2013, 12:43 PM ET
NASA is marking the Curiosity rover's first year on Mars with a commemorative medal minted from metal used in the engineering of the robot explorer. The 1-ton, six-wheeled rover landed in Mars' Gale crater on the night of Aug. 5, 2012.
05 August 2013, 09:26 AM ET
The Mars Science Laboratory landed on the Red Planet on August 5th, 2012 (PDT). It went down a long road of testing and a long eight month flight to achieve its year one goals.
05 August 2013, 08:17 AM ET
Three space colony summer studies were conducted at NASA's Ames Research Center in the 1970s. A number of artistic renderings of the concepts were made.