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Stories, updates, insights, and original analysis from The Planetary Society.

Second Mars Rover Opportunity Fast Approaching Mars

The second Mars Exploration Rover -- Opportunity -- Spirit's identical twin -- is approaching the atmosphere of Mars and is expected to land on the Red Planet tonight around 9:06 p.m. Pacific Standard Time.

Mars Rover Spirit Upgraded from "Critical" to "Serious"

The specially formed Anomaly Team working overnight to unravel the mystery of what happened last Wednesday that caused the rover’s computer to fall into a reboot loop and stop functioning properly – had by this morning come up with a working hypothesis.

Spirit Ventures Out to First Target

Spirit ventured out yesterday, driving nearly 10 feet (about 3 meters) to its first target -- a football-sized rock that scientists have dubbed Adirondack. Meanwhile, Spirit's twin, Opportunity, successfully completed its first trajectory correction maneuver (TCM) in four months.

Spirit Extends Arm and Takes First Close-Up Images of Martian Soil

Spirit has extended her robotic arm for the first time to examine a patch of fine-grained Martian soil, and joined forces with the European Space Agency's Mars Express to successfully conduct the first-ever, international, coordinated observation of the planet's atmosphere.

Spirit Set to Roll Off Lander Thursday

Spirit is up -- standing at full height on all six wheels -- and is ready to roll off the lander heading west by northwest, probably sometime early Thursday morning Earth time, according to the latest plan.

NASA Begins Countdown to Spirit's Arrival on Mars

Spirit – the first of NASA's two robot geologists en route to the red Planet -- is “in “excellent” health, NASA and JPL scientists reported at a news briefing at JPL this afternoon, and the countdown to touch down on the Red Planet has begun.

Voyager's Last View

Home. Family. This will be Voyager's enduring legacy: It has changed forever the feelings raised by those words. Through its robotic eyes we have learned to see the solar system as our home. Through its portraits of the planets we know that they are part of our family. Apollo astronauts showed us a tiny Earth alone in the blackness of space. Now, with these images, Voyager has shown us that Earth is not really alone. Around our parent Sun orbit sibling worlds, companions as we travel through the Galaxy.

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