23 July 2007, 12:59 PM ET
The rovers' batteries are fully charged and light levels have increased.
20 July 2007, 08:17 AM ET
Martian storms engulf entire globe with 'planet-encircling veil of dust.'
09 July 2007, 02:09 PM ET
Preparations are on track for an Aug. 3 launch of NASA's Phoenix lander.
08 July 2007, 10:10 PM ET
Scientists downplay concerns that dust storms will affect NASA's next Mars mission.
05 July 2007, 01:27 PM ET
Major Martian dust storm threatens future of rover missions.
04 July 2007, 02:01 PM ET
A large storm is growing larger, and dust is partially blocking the sun
28 June 2007, 01:42 PM ET
Opportunity's descent into Victoria Crater will be one of its riskiest missions yet.
07 June 2007, 06:00 AM ET
Any day now one of my dearest friends â€“ perhaps even two of them â€“ will die, leaving a huge hole in my world.
05 June 2007, 05:50 AM ET
Mars rovers Spirit and Opportunity continue to wheel about diverse locales.
21 May 2007, 05:51 PM ET
A NASA rover unearthed more evidence that Mars had more water than thought.
03 May 2007, 06:33 PM ET
Scientists knew Mars was volcanically active in the past. Now they have up-close evidence.
26 April 2007, 06:20 AM ET
Mars is a very windy place—so windy, in fact, that bright, oxidized martian soil is being scoured away by martian winds and dust devils to reveal darker, sub-surface soil with the end result of making the whole planet warmer.
14 March 2007, 05:26 PM ET
Scientists are puzzling over new Mars rover data revealing soil packed with sulfur and traces of water. It could be evidence of an evaporated spring or volcanic deposits from ancient gas vents.
07 March 2007, 01:00 PM ET
Groundwater once bubbled up from beneath the surface of Mars to form transient, shallow pools before evaporating and leaving behind thick layers of salty minerals, a new computer model suggests.
14 February 2007, 06:10 AM ET
NASA has made its Mars rovers even smarter with computer upgrades beamed through space that give the robots greater power to act on their own on the red planet.
04 January 2007, 06:48 AM ET
There?s majesty on Mars. Through the lenses of two wheeled robots–Spirit and Opportunity–the red planet?s austere but stunning landscape has been captured in thousands of images relayed back to Earth.
28 December 2006, 08:35 AM ET
NASA’s Opportunity and Spirit Mars rovers are on the prowl. Science teams are plotting out new escapades for the twin robots—new destinations certain to reveal more secrets from the red planet.
05 December 2006, 11:10 AM ET
After circling the red planet for more than eight months, NASA’s Mars Reconnaissance Orbiter has taken images of three spacecraft that the agency had previously sent to the Martian surface.
29 November 2006, 05:55 PM ET
New imagery taken by NASA’s Mars Reconnaissance Orbiter has been released, a sweeping gallery of red planet photos – including Endurance crater that NASA’s Opportunity rover explored for ten months.
21 November 2006, 03:40 PM ET
BOULDER, Colorado – In a high-tech game of celestial hide and seek, a Mars orbiter has tried to image a lost-in-space red planet probe.
06 November 2006, 04:29 PM ET
NASA’s lively robotic twosome—the Spirit and Opportunity Mars rovers—are in good shape to soldier onward in their dealings with the red planet.
26 October 2006, 07:00 AM ET
NASA's Spirit rover hit the 1,000-Martian day of its mission on the red planet Thursday, but the mission continues for the hardy robot.
16 October 2006, 03:41 PM ET
NASA’s latest spacecraft to orbit Mars has already found new clues to the red planet’s changing environment, and the best is yet to come, mission managers said Monday.
06 October 2006, 02:25 PM ET
NASA’s newest Mars orbiter has spied the plucky rover Opportunity perched at the rim of the red planet’s massive Victoria Crater as both vehicles explore the fourth planet from the Sun.
02 October 2006, 02:32 PM ET
Scientists studying initial on-the-scene images relayed from NASA’s Opportunity Mars rover at Victoria Crater are elated.
21 September 2006, 08:20 AM ET
Scientists and engineers are enjoying success both on the surface of the red planet and in orbit around Mars.
09 August 2006, 09:13 AM ET
Those industrious robots on Mars—NASA’s Spirit and Opportunity rovers—remain on duty as they gather new science data from their respective spots on the red planet.
16 June 2006, 03:16 PM ET
In “Backyard Astronomy from Mars” carried in the August issue of Sky & Telescope magazine (soon to hit newsstands), author Jim Bell details use of the Spirit and Opportunity Mars rovers to carry out nighttime observations.
19 May 2006, 04:19 PM ET
Those never say die robots on Mars ï¿½ NASAï¿½s Spirit and Opportunity ï¿½ continue to chalk up science at their respective exploration sites.
25 April 2006, 06:56 AM ET
Those long-lived NASA Mars rovers—Spirit and Opportunity—remain in fairly good shape, with one robot in survival mode as martian winter arrives while its twin snakes its way across a taxing terrain of sand dunes to reach a striking target.
17 March 2006, 07:06 AM ET
HOUSTON, Texas ? NASA?s Spirit Mars rover has wrapped up exploration of a baffling feature called "Home Plate" but now faces the onset of martian winter while dealing with dropping power levels and fighting a balky right front wheel.
08 March 2006, 03:45 PM ET
It’s crunch time for NASA’s Mars Reconnaissance Orbiter, a massive spacecraft bearing down on the red planet for a March 10 arrival after seven months of spaceflight.
10 February 2006, 06:41 AM ET
NASA?s Spirit Mars rover has arrived at a site dubbed "Home Plate" within Gusev crater. But what the robot found has left scientists puzzled.
02 February 2006, 06:53 AM ET
NASA’s revered Mars rovers, Spirit and Opportunity, are both on a roll toward new scientific objectives, but two years into their mission, the twin robots are each showing their age.
25 January 2006, 07:43 AM ET
Probably the most remarkable success in America’s space program (outside of being able to put humans on the Moon in 1969 after just eight years), has to be the story of two robotic rovers, Spirit and Opportunity, trucking around on Mars for more than two
20 January 2006, 02:48 PM ET
After nearly two months at a standstill, NASA’s Mars rover Opportunity has driven its first tentative meters with a partially stowed robotic arm.