Jul 11, 2006 | MISSIONS
Possible Meteorites in the Martian Hills
(NASA - JPL) - NASA's Mars Exploration Rover Spirit has photographed two potential iron meteorites in Gusev Crater.

Mar 20, 2006 | MISSIONS
Rovers Prepare for Martian Winter
(NASA - JPL) - A new MER project manager is named as preparations for the Martian winter begin.

Feb 13, 2006 | MISSIONS
Spirit Reaches 'Home Plate'
(NASA) - Spirit has reached the geologic feature dubbed 'Home Plate' in Gusev Crater.

Jan 25, 2006 | MISSIONS
Mars Rovers Advance Understanding of the Red Planet
(NASA - JPL) - Spirit and Opportunity continue to find new variations of bedrock in areas they are exploring.

Dec 13, 2005 | MISSIONS
Opportunity Celebrates One Martian Year
(NASA - JPL) - Opportunity celebrated its 'One Martian Year' Anniversary on December 12.

Nov 30, 2005 | MISSIONS
Rover Helps Reveal Possible Secrets of Martian Life
(NASA - JPL) - Analysis of data from Opportunity reveals the challenges life may have faced in the harsh Martian environment.

Nov 22, 2005 | MISSIONS
Spirit Marks One Martian Year on Mars
(NASA - JPL) - NASA's Spirit rover has completed one Martian year (almost two Earth years) on Mars.

Oct 26, 2005 | MISSIONS
Ice Beneath Mars Is Asking, ' Can you hear me now?'
(NASA - JPL) - A small amount of radio noise received in a test of the UHF radio system on Mars Odyssey in 2003 may be a signal reflected off of subsurface ice on Mars.

Aug 26, 2005 | MISSIONS
Briefing Will Present News from a Martian Hilltop
(NASA) - Spirit has reached the summit of Husband Hill.

May 24, 2005 | MISSIONS
Rovers Continue Martian Missions
(NASA - JPL) - Mars rover Opportunity tries to escape from a sand trap, while its twin, Spirit, is busy finding new clues to a wet and violent early Martian history.

Apr 06, 2005 | MISSIONS
Durable Mars Rovers Sent into Third Overtime Period
(NASA) - NASA has approved up to 18 more months of operations for Spirit and Opportunity.

Mar 16, 2005 | MISSIONS
High Winds Make Spirit Full of Energy
(NASA - JPL) - Scientists are learning from NASA's Mars Exploration Rovers during the dust storm season on Mars.

Feb 21, 2005 | SCIENCE
NASA Statement on False Claim of Evidence of Life on Mars
(NASA) - News reports on February 16, 2005, that NASA scientists from Ames Research Center have found strong evidence that life may exist on Mars are incorrect.

Jan 25, 2005 | MISSIONS
Opportunity Tracks Seen from Orbit
(NASA - JPL) - NASA's Mars Exploration Rover Opportunity landed on the red planet a year ago.

Jan 20, 2005 | MISSIONS
Opportunity Rover Finds an Iron Meteorite on Mars
(NASA - JPL) - Opportunity has found an iron meteorite, the first meteorite of any type ever identified on another planet.

Jan 04, 2005 | MISSIONS
NASA Rovers' Adventures on Mars Continue
(NASA) - The Spirit rover begins its second year on Mars investigating puzzling rocks unlike any found earlier.

Dec 30, 2004 | MISSIONS
NASA Events Commemorate Rover Anniversary on Mars
(NASA) - Events are to be held at JPL on January 3rd to commemorate the one-year anniversary of the Mars Exploration Rovers mission.

Dec 21, 2004 | MISSIONS
Mars Rovers Earn Journal's 'Best Science' Title
(NASA - JPL) - NASA's Mars Exploration Rovers' discovery of evidence of past water on Mars is named scientific "Breakthrough of the Year".

Dec 13, 2004 | MISSIONS
Mars Rovers Spot Water-Clue Mineral, Frost, Clouds
(NASA - JPL) - Scientists have identified a water-signature mineral in bedrock examined by Spirit in the "Colombia Hills."

Dec 06, 2004 | MISSIONS
Reports Detail Rover Discoveries of Wet Martian History
(NASA - JPL) - Major research journal publishes findings from the Mars Exploration rovers.

Nov 11, 2004 | MISSIONS
Mars Exploration Rover Mission Status
(NASA - JPL) - Operators for the Opportunity rover are choosing a path for exiting Endurance Crater.

Nov 05, 2004 | MISSIONS
Spirit Adds Clues about History of Rocks in Martian Hills
(NASA - JPL) - Ten months after Spirit's dramatic landing, all of the instruments on both of the Mars Exploration Rovers are still working well.

Oct 08, 2004 | MISSIONS
Mars Rovers Probing Water History at Two Sites
(NASA - JPL) - Mars Exploration Rover team members report new findings about the history of water on Mars.

Sep 22, 2004 | MISSIONS
Rover Missions Renewed as Mars Emerges from Behind Sun
(NASA - JPL) - The Mars Exploration Rovers are now active again, and NASA has decided to extend their mission for another six months.

Sep 02, 2004 | MISSIONS
Mars Exploration Rover Mission Status
(NASA - JPL) - Opportunity has resumed using its rock abrasion tool.

Aug 26, 2004 | MISSIONS
Mars Odyssey Begins Overtime after Successful Mission
(NASA - JPL) - NASA's Mars Odyssey orbiter will now begin working overtime after completing its prime mission.

Aug 18, 2004 | MISSIONS
Bedrock in Mars' Gusev Crater Hints at Watery Past
(NASA - JPL) - Spirit has found evidence that water thoroughly altered some rocks in Mars' Gusev Crater.

Aug 11, 2004 | MISSIONS
Relays from Mars Show International Interplanetary Networking
(NASA - JPL) - Mars Express demonstrates its ability to serve as a communications link to Mars.

Aug 09, 2004 | MISSIONS
Rocks Tell Stories in Reports of Spirit's First 90 Martian Days
(NASA - JPL) - Scientific findings from Spirit's first three months on Mars were published last Friday.

Jun 28, 2004 | MISSIONS
Mars Rover Surprises Continue; Spirit, Too, Finds Hematite
(NASA - JPL) - Both Spirit and Opportunity have found new surprises for researchers back on Earth.

Jun 15, 2004 | MISSIONS
Mars Rovers Going The Extra Mile
(NASA) - NASA's Mars rovers are delighting scientists with their extra credit assignments.

Jun 10, 2004 | MISSIONS
Mars Rovers Continue Unique Exploration of Mars
(NASA – JPL) - Opportunity prepares to move forward into Endurance crater.

Jun 04, 2004 | MISSIONS
Opportunity Gets Green Light To Enter Crater
(NASA) - NASA decides to send Opportunity into 'Endurance' crater.

Jun 02, 2004 | MISSIONS
Rovers Examining Hills and Crater in Bonus-Time Mission
(NASA – JPL) - NASA's Mars Exploration Rovers continue to discover clues about water on Mars, even after the end of their primary mission.

May 19, 2004 | MISSIONS
Mars Rover Inspects Stone Ejected From Crater
(NASA - JPL) - Opportunity has been examining rocks blasted out of the "Endurance" impact crater.

May 07, 2004 | MISSIONS
Mars Rover Arrival at Deeper Crater Provides a Tempting Eyeful
(NASA - JPL) - After a six-week trek, Opportunity has reached the stadium-sized 'Endurance Crater'.

Apr 29, 2004 | MISSIONS
Mars Rovers Finish Primary Mission and Roll Onward
(NASA - JPL) - The Mars Exploration Rovers have begun 'extra-credit' assignments after completing their originally planned mission.

Apr 27, 2004 | MISSIONS, TECHNOLOGIES
NASA Develops Software for Mars Mission
(NASA – ARC) - A new science planning support system is helping the Mars Exploration Rovers with their daily operations.

Apr 08, 2004 | MISSIONS
NASA Extends Mars Rovers' Mission
(NASA – HQ) - NASA approves up to five months of overtime assignments for the Mars Exploration Rovers.

Apr 05, 2004 | MISSIONS
Spirit Finds Multi-Layer Hints of Past Water at Mars' Gusev Site
(NASA – JPL) - Spirit finds rock that may have been repeatedly exposed to water in Gusev crater.

Mar 29, 2004 | MISSIONS
New Phase of Exploration Beginning for Mars Rovers
(NASA - JPL) - Spirit enters new phase of exploration just before its 3-month primary mission ends.

Mar 23, 2004 | MISSIONS
More Clues Emerge to Mars' Watery Past
(NASA) - Researchers think that Opportunity is now parked on the edge of what used to be a salty sea on Mars.

Mar 23, 2004 | MISSIONS
Leaving the Nest
(NASA - JPL) - Opportunity rolled out of its landing crater and gained a new view of Meridiani Planum.

Mar 20, 2004 | MISSIONS
Mineral in Mars 'Berries' Adds to Water Story
(NASA - JPL) - Small mineral spheres analyzed by Opportunity provide further understanding of past water at Meridiani Planum.

Mar 08, 2004 | MISSIONS
Volcanic Rock in Mars' Gusev Crater Hints at Past Water
(NASA - JPL) - NASA's Spirit rover has found its own potential evidence of past water on Mars.

Mar 03, 2004 | MISSIONS
Meridiani Planum: 'Drenched'
(NASA) - Scientists discuss Opportunity's evidence for past water on Mars.

Mar 02, 2004 | MISSIONS
Opportunity Rover Finds Strong Evidence Meridiani Planum Was Wet
(NASA - JPL) - Scientists have concluded that the area of Mars where NASA's Opportunity rover is exploring was soaking wet in the past.

Feb 23, 2004 | MISSIONS
Mars Rover Updates
(NASA - JPL) - Spirit continues to examine the trench it created, and Opportunity is busy using its microscope.

Feb 16, 2004 | MISSIONS
Check Before Digging
(NASA - JPL) - Opportunity prepares to dig and Spirit goes for a long drive.

Feb 10, 2004 | MISSIONS
Mars Rover Pictures Raise 'Blueberry Muffin' Questions
(NASA - JPL) - Spirit finishes drilling into volcanic basalt as Opportunity studies small spheres embedded in bedrock.

Feb 02, 2004 | MISSIONS
Mars Rover Spirit Restored to Health
(NASA - JPL) - Spirit is healthy again due to the recovery work of mission engineers.

Feb 02, 2004 | MISSIONS
Opportunity Roles onto Martian Ground
(NASA - JPL) - Opportunity has driven onto the soil of Mars.

Jan 30, 2004 | MISSIONS
Opportunity Rover Begins Standing Up
(NASA - JPL) - Opportunity has untucked its front wheels in preparation to move, and the recovering Spirit has sent another picture from Mars.

Jan 25, 2004 | MISSIONS
First Images of Opportunity Site Show Bizarre Landscape
(NASA - JPL) - NASA's Opportunity rover returned the first pictures of its landing site early today.

Jan 23, 2004 | MISSIONS
Further Communication Planned with Spirit
(NASA - JPL) - Early this morning, the flight team for the Mars Exploration Rovers received data from the Spirit rover at Gusev Crater.

Jan 21, 2004 | MISSIONS
NASA Mars Rover's First Soil Analysis Yields Surprises
(NASA - JPL) - The first use of the tools on the arm of NASA's Mars Exploration Rover Spirit reveals puzzles about the soil it examined.

Jan 20, 2004 | MISSIONS
Mars Rover Opportunity Mission Status
(NASA - JPL) - Opportunity prepares for its arrival at Mars.

Jan 15, 2004 | MISSIONS
Spirit Rolls onto Martian Soil
(NASA - JPL) - Spirit successfully drove off its lander platform and onto the soil of Mars early today.

Jan 14, 2004 | MISSIONS
Spirit Gets a Travel Itinerary
(NASA -JPL) - Spirit has rotated on its lander and is preparing to undertake its new mission itinerary.

Jan 12, 2004 | MISSIONS
Spirit Rover Nearly Ready to Roll
(NASA - JPL) - With its arm and all six wheels free, Spirit is nearly ready to begin exploring the Martian surface.

Jan 07, 2004 | MISSIONS
Most Detailed Picture of Mars Ever
(NASA -JPL) - Spirit has sent its first full-color picture of Mars.

Jan 05, 2004 | MISSIONS
Healthy Rover Shows Its New Neighborhood on Mars
(NASA - JPL) - Spirit has begun to examine its surroundings.

Jan 05, 2004 | MISSIONS
Spirit Lands on Mars and Sends Postcards
(NASA - JPL) - Spirit has returned the first images from its landing site inside the Gusev Crater on Mars.

Dec 30, 2003 | MISSIONS
Destination: Gusev Crater
(NASA) - On January 3, NASA's Mars rover Spirit is scheduled to land in a strange crater that might be an ancient martian lake bed.

Dec 02, 2003 | MISSIONS
Spotlight: Challenges of Getting to Mars
(NASA - JPL) - As the landing for the Mars Exploration Rovers approaches, researchers at NASA discuss the difficulties of getting to Mars.

Nov 26, 2003 | MISSIONS
NASA Briefing to Preview Twin Rovers' Arrival at Mars
(NASA - ARC) - The arrival date of the Mars Exploration Rovers 'Spirit' and 'Opportunity' is quickly approaching.

Jul 28, 2003 | EDUCATION
Students and Teachers to Explore Mars
(NASA - JPL) - High school students are given the opportunity to work on research projects during the Mars Exploration Rover missions.

Jul 09, 2003 | MISSIONS
Opportunity Launches
(NASA - KSC) - The Mars rover 'Opportunity' launched successfully on Monday, July 7.

Jul 03, 2003 | MISSIONS
Opportunity Launch Delayed
(NASA - KSC) - The launch of Opportunity has been rescheduled for July 6.

Jul 01, 2003 | MISSIONS
Opportunity Delayed
(NASA - KSC) - The launch of the second Mars Exploration Rover has been postponed to no earlier than Saturday, July 5.

Jun 30, 2003 | MISSIONS
Opportunity Launch Delayed
(NASA) - The second Mars Exploration Rover, Opportunity, is now targeted for launch on Wednesday, July 2.

Jun 23, 2003 | MISSIONS
Launch of Delta II with 'Opportunity' Targeted for June 28
(NASA - KSC) - Launch of NASA's second Mars Exploration Rover is officially set for Saturday, June 28.

Jun 22, 2003 | MISSIONS
MER-B Delayed
(NASA - KSC) - The launch of NASA's second Mars Exploration Rover has been delayed at least two days.

Jun 19, 2003 | MISSIONS
MER-B Status Report
(NASA - KSC) - With the successful launch of 'Spirit', mission specialists now turn to NASA's second Mars Exploration Rover, 'Opportunity'.

Jun 10, 2003 | MISSIONS
NASA's 'Spirit' Rises on Its Way to Mars
(NASA - JPL) - The first of NASA's Mars Exploration Rovers began its journey to the Red Planet today.

Jun 09, 2003 | MISSIONS
Next Rover Launch Attempt Set for Tuesday
(NASA) - Weather has again caused a launch delay for the first Mars Exploration Rover.

May 30, 2003 | MISSIONS
MER-A Mars Exploration Rover Targeted for Launch June 8
(NASA - KSC) - The first of NASA's Mars Exploration Rovers will now launch on June 8.

May 27, 2003 | MISSIONS
Mars Exploration Rover Spacecraft Undergo Biological Testing and Cleaning
(NASA - KSC) - NASA's Mars Exploration Rover Spacecraft are cleaned before launch in accordance with NASA's planetary protection policy.

May 22, 2003 | MISSIONS
Mars Exploration Rover Status Report
(NASA - KSC) - The final preparations are now being made for the launch of NASA's Mars Exploration Rovers.

Sep 10, 2002 | MISSIONS
No Drought of Mars Landing Sites
(Astrobiology Magazine) - Proposed landing sites for the Mars Exploration Rovers may yield evidence of liquid water on ancient Mars.

Aug 23, 2002 | MISSIONS, TECHNOLOGIES
Rehearsal Readies Scientists for NASA's Next Mars Landing
(NASA) - Scientists have spent the last few weeks in the desert, rehearsing their roles for Mars Exploration Rover mission.

Apr 24, 2002 | MISSIONS
Mars Rover Landing Spots: Blowing In The Wind
(Space.com) - Scientists have discovered a new problem with some of the proposed landing sites for the 2003 Mars Exploration Rovers: strong winds.

Mar 15, 2002 | SCIENCE, MISSIONS
Mars Rover Landing Site Sweet Spots Not So Sweet
(Space.com) - Spacecraft orbiting Mars have revealed problems with proposed landing sites for the 2003 Mars Exploration Rovers.

Mar 04, 2002 | SCIENCE, MISSIONS, TECHNOLOGIES
Vast Ice Fields Suggest Life on Mars Possible
(L.A. Times) - Scientists say they are 'blown away' by the Odyssey spacecraft's findings.

Feb 12, 2002 | SCIENCE, MISSIONS, TECHNOLOGIES
Mars Global Surveyor Begins Second Year of Extended Mission
(Malin Space Science Systems) - A new 3-D image from the probe shows layers perhaps deposited by wind or water.

Feb 11, 2002 | MISSIONS, TECHNOLOGIES
Ideas that Gel
(NASA) - Aerogel, the world's lightest solid, will catch pieces of a comet.

Feb 06, 2002 | SCIENCE, MISSIONS
Four Sites Considered for Landers
(Florida Today) - Isidis Planitia has replaced Athabasca Vallis as one of the candidate landing sites for the 2003 Mars Exploration Rovers.

Dec 13, 2001 | SCIENCE, MISSIONS
Where to Land on Mars? It's Not an Easy Choice
(NASA) - Scientists have selected four candidate landing sites for the twin Mars Exploration Rovers.

Jul 18, 2001 | MISSIONS, TECHNOLOGIES
New Wheels Developed for Mars
(Florida Today) - Creative wheel designs are required to get around the planet's difficult terrain.

Jun 13, 2001 | SCIENCE, MISSIONS
Swept Away: Evidence of Erosion on Mars
(NASA Astrobiology Institute) - Flowing water may have eroded a broad swath of the surface of Mars roughly 3.5 to 3.8 billion years ago.

Mar 19, 2001 | MISSIONS
2001 Mars Odyssey to find out what Mars is made of
(NASA) - NASA's next mission to Mars is set to launch on April 7.

Mar 02, 2001 | SCIENCE, MISSIONS
Two Rovers in Search of a Landing Site
(NASA Astrobiology Institute) - In 2003, NASA will send two rovers to Mars to search for signs of water in the planet's ancient past. But where exactly on Mars should they look for it?

Dec 22, 2000 | SCIENCE, MISSIONS
Scientists to begin selecting landing sites for Mars rovers
(Space.com) - The two rovers will search for evidence of liquid water in Mars' ancient past.

Aug 10, 2000 | SCIENCE, MISSIONS, TECHNOLOGIES
NASA plans to send twin rovers to Mars in 2003
(Spaceflight Now/NASA) - The two rovers will study the history of water on Mars and search for evidence of life.