Mars or Bust: Robot to Try Sunday Landing

NASA engineers will be holding their breaths Sunday, as a digging robot attempts a precarious landing on Mars' surface. NASA's Phoenix Lander was launched in August and has traveled 122 million miles to Mars. It is a $457 million robotic spacecraft -- equipped with a backhoe, cameras and a compact chemistry lab -- that will attempt to find out whether the cold, forbidding surface of Mars could once have been warm enough for microbial life to exist on the planet. Phoenix is scheduled to land...Full Story
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