Pathfinder's Robot Rover Begins Exploring Surface of Mars

The Washington Post | July 6, 1997| | Copyright

The Pathfinder spacecraft's robot rover stood up from a crouched position today and tentatively rolled down a ramp to become the first mobile entity to explore the surface of Mars.

Like a dog waking up from a nap and stretching its legs, the 23-pound Sojourner rover responded to commands from its masters on Earth at about 8 p.m. PDT (11 p.m. EDT) and rose from its bed on the foot of its mothership. Simultaneously, pyrotechnic devices released flexible metal ramps, which extended in front and behind the 2-foot-long, 1-foot-tall rover.

About 2 1/2 hours later, another set of commands ...

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