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There are moments in space exploration when fact and fantasy intertwine. The Mars Phoenix Lander, the latest of NASA's robotic fleet, demonstrated that after touching down in -58 F temperatures (-50 C) near the planet's north pole on May 25 at 7:38 p.m. EST. Television broadcasts relayed...
Because of the spacecraft's risk-filled landing, it could have easily been a nightmare-more than half of all Mars missions have ended in failure. Sitting in the mission control room during the final moments of the descent is like riding the bench during a baseball no-hitter: no...
The Mars Phoenix is just the latest in a small fleet of relatively inexpensive spacecraft (a few hundred million dollars apiece, which is tag-sale prices by spaceship standards) NASA has launched toward Mars in the last dozen years. The Mars Express and Mars Odyssey orbiters have done the true...
Mars, as scientists now know, was once a very wet planet, running with rivers and teeming with oceans and seas much like the Earth. But its low gravity and thin atmosphere allowed most of that water to vanish into space. What was left retreated into the subsoil or, significantly, contracted...
As with all its Mars landers, NASA is keeping the expectations for Phoenix's lifespan low. If the ship operates for just a few months before the punishing climate of the Martian poles kills it, the mission will still be considered a success. Like the other Mars landers before it...