05 February 2013, 07:00 AM ET
No asteroid target has yet been selected, making planning difficult.
04 February 2013, 01:11 PM ET
The robot pounded the rock with its arm-mounted drill but has apparently not spun the drill bit yet.
04 February 2013, 07:00 AM ET
The proposed rover must collect rock samples for return to Earth, scientists said.
01 February 2013, 02:41 PM ET
Skywatcher Ajay Talwar captures dazzling photo of Mars, Saturn and Spica over historic landmark in Delhi, India.
30 January 2013, 08:00 AM ET
The robot has been sizing up a target rock and flexing its robotic arm.
29 January 2013, 02:59 PM ET
The Dutch nonprofit Mars One aims to land four colonists on the Red Planet in 2023. Do you want to be one of them?
29 January 2013, 02:35 PM ET
Mars One will use the money to fund conceptual design studies and its astronaut selection process.
28 January 2013, 04:17 PM ET
The European Space Agency will send its Mars Express spacecraft within 36 miles of the tiny moon.
25 January 2013, 05:08 PM ET
The discovery reinforces the dynamic nature of the Martian surface.
25 January 2013, 01:27 PM ET
In Mars' polar regions, carbon dioxide freezes up to 2 feet thick. As the Sun begins to thaw the ice it turns into a gas. The gas release carries dark sand and dust, moving them down the steep sides of the dunes.
25 January 2013, 11:12 AM ET
The photos show Mars at night in visible and ultraviolet light.
24 January 2013, 07:24 AM ET
The nuclear-powered mobile science laboratory Curiosity will roll across the surface of Mars for years, searching for the conditions that may have once made Mars an abode of life.
24 January 2013, 07:12 AM ET
Distances driven by wheeled vehicles on the Moon and Mars.
24 January 2013, 07:00 AM ET
Opportunity's surface mission was originally supposed to last three months.
23 January 2013, 05:35 PM ET
The Top 10 results from NASA's long-lived Red Planet explorers.
23 January 2013, 02:23 PM ET
Mars One's leader discusses how a global reality-TV event can fund a Red Planet colonization effort.
23 January 2013, 07:00 AM ET
"The Changing Face of Mars" will premiere tonight at Caltech in Pasadena.
20 January 2013, 02:40 PM ET
McLaughlin Crater on Mars is 57 miles wide and deep enough that groundwater may have filled it in the distant past.
19 January 2013, 10:35 AM ET
The robotic "hedgehogs" could ride the Phobos Surveyor spacecraft to Mars in a few decades.
17 January 2013, 05:09 PM ET
NASA's Mars Reconnaissance Orbiter took the crisp photo.
17 January 2013, 07:00 AM ET
There are good scientific and ethical reasons to protect parts of Mars and other celestial bodies, advocates say.
15 January 2013, 05:05 PM ET
Whatever it is, it's not alive, scientists say.
15 January 2013, 02:59 PM ET
The rover should start drilling within two weeks or so, scientists say.
10 January 2013, 10:50 AM ET
Scientists have discovered strange magnetic ropes hundreds of miles long above the poles of Venus.
09 January 2013, 07:00 AM ET
Comet ISON could put on an amazing show when it passes close to the sun late this year.
08 January 2013, 11:56 AM ET
Mars One has released its basic astronaut requirements.
08 January 2013, 07:00 AM ET
The record-setting Mars500 mission locked six men in a mock spaceship for 520 days.
07 January 2013, 11:58 PM ET
The rover's Dust Removal Tool clears away the ubiquitous Red Planet dust.
07 January 2013, 06:00 AM ET
A proposed $2.6 billion asteroid-retrieval mission could help jump-start manned exploration of deep space, proponents say.
03 January 2013, 02:00 PM ET
A Martian meteorite that landed in Morocco in 2011 is revealing the Red Planet's secrets
03 January 2013, 07:00 AM ET
NASA's Spirit rover landed nine years ago today, and its twin Opportunity followed three weeks later.
03 January 2013, 06:00 AM ET
A brief rundown of the intrepid spacecraft currently sending data home from beyond Earth orbit.
02 January 2013, 01:02 PM ET
Earth has been sending probes to Mars for decades, but some missions stand above the rest.
31 December 2012, 07:00 AM ET
Experts weigh in on NASA's direction and its ultimate goals of sending astronauts into deep space.
27 December 2012, 05:06 PM ET
The latest self-portrait of Curiosity on Mars is an eye-popping Martian sight.
27 December 2012, 11:23 AM ET
The Curiosity rover searched a shallow depression known as “Yellowknife Bay” to find a new rock to chemically analyze