Since Spirit's landing on January 3, 2004, Mars has completed one orbit around the Sun. That's one martian year - about twice as long as a year on Earth. With this anniversary in mind, it's time to celebrate the rover's accomplishments.
From working with prototype rovers in an Earth-bound sandbox, to driving on the actual red sands of Mars, Dr. Ashley Stroupe gets the best of both planets.
What could have been dismissed as "just static" in a radio signal is actually an echo from Mars that might reflect the shape of hidden ice and rock structures beneath the martian surface.
In fall of 2005, Mars will outshine most of the stars in the night sky.
NASA scientists have discovered additional evidence that Mars once underwent movement of the planet’s crust, like the present-day Earth.
As the rovers keep journeying across the surface of Mars, scientists are busy churning out journal articles that herald the new discoveries revealed by their robot geologist partners.
Blind students explore Mars with computer skills and adventurers' hearts.
Spirit backs off from its first attempt to reach the top of the "Columbia Hills."
The largest of the two is less than a foot wide.
Mars Reconnaissance Orbiter will follow clues to where the lost Mars Polar Lander and Beagle 2 might be.
Spirit spies a swarm of dust devils wheeling across the plains of Gusev Crater.
This summer, the Mars Reconnaissance Orbiter will embark on a mission to examine the surface of Mars in more detail than ever before.
Camera images from Mars tell a story about wind.
Rob Manning, leader of the landing team for the Mars Rovers, recalls the thrills and chills of Spirit's historic arrival.
And now, for Spirit and Opportunity, it's time for the bonus round.
How do you get a picture-perfect day on Mars? By conducting tests, tests and more tests on Earth.
Learn how scientists can interpret Mars by following geologist Jim Garvin on a virtual tour of a recently formed volcanic island in Iceland.› View This Video
Mars opens a new window on our own planet.› View This Video
Administrator's "we're back" enshrined at Mission:SPACE thrill ride.
The European Space Agency spacecraft's discovery raises the exciting question -- "Where does the methane come from?"