Facts about Sojourner

Sojourner is 22 years old
Born: July 4, 1997
Best known as: The first rolling robot to land on Mars


Sojourner Biography

The Sojourner rover is an exploratory robot which landed on Mars on July 4, 1997. ¬†Sojourner was part of NASA’s Mars Pathfinder mission, dedicated to exploring the surface of Mars. (It was officially named “Sojourner Truth” after the famous¬†American abolitionist.) As planned, Sojourner rolled around the planet’s surface taking scientific readings of various bits of rock and soil. The plucky robot remained active for just a few months, until September 1997, when its communications with Earth were finally cut off due to failing power.


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