- 2001 Mars Odyssey (4)
- Learn about NASA's 2001 Mars Odyssey, an orbiter making global observations of Mars. Sites discuss the Odyssey's mission to detect health hazards for future human space explorers and search for water and evidence of life-sustaining environments.
- Be a Martian: Age of Virtual Exploration & the Human-Robotic Partnership
- Participate as a citizen scientists to improve Martian maps, take part in research tasks, and assist Mars science teams studying data about the Red Planet. From NASA and Microsoft. - ExoMars
- Part of the ESA's Aurora Exploration Programme, ExoMars aims to further characterize the biological environment on Mars in preparation for robotic missions and then human exploration. - Exploring Mars
- Survey from Pathfinder forward. - FIDO (Field Integrated Design and Operations) (3)
- Malin Space Science Systems
- Designs, develops, and operates instruments that fly on robotic spacecraft. Includes images taken from the Mars Global Surveyor, the Mars Reconnaissance Orbiter, and both Mars Rovers. - Mars 96
- A failed Russian mission which fell back to Earth. - Mars Climate Orbiter
- Lost on September 23, 1999 because one team used English units while the other used metric units for a key spacecraft operation. - Mars Exploration Rover Mission (31)
- Learn about NASA's twin robot geologists, the Spirit and Opportunity Rovers, that landed on Mars in January 2004 in search of answers about the history of water on Mars. Sites feature extensive photo galleries and mission updates from the Red Planet.
- Mars Express (10)
- Mars Global Surveyor (6)
- See photographs of Mars surface and learn about the Red Planet's weather from data gathered by NASA's Mars Global Surveyor orbiter.
- Mars Pathfinder (8)
- Mars Polar Lander (2)
- Mars Reconnaissance Orbiter (7)
- Mars Science Laboratory (4)
- Mars Team Online
- Project for middle school students and teachers designed to let them join the Mars team in their exploration of the Red Planet. - Mars TV: Return to Mars 2003/2004
- Brings together news articles and features covering the Mars Exploration Rovers and Mars Express missions. - NASA's Mars Exploration Program
 - NASA's home for all Mars missions past, present, and future. Aims to determine if life ever arose on Mars, characterize its climate and geology, and prepare for human exploration. - Phoenix Mars Lander (8)
- Planet-B (Nozomi) (1)
- Red Rover Goes To Mars@
- ROVer Ranch: K-12 Experiments in Robotic Software
- Robotics workshop for assembling the hardware and instructions for a software robot to perform a mission in a virtual environment. From NASA. - Sundial for Mars
- Destined for Mars in 2002. - Viking Landers (4)
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