A manmade probe is clinging to a comet that is traveling at nearly 84,000 mph, but yesterday's rough landing could hamper the 10-year-old mission
A manmade probe is clinging to a comet that is traveling at nearly 84,000 mph, but yesterday's rough landing could hamper the 10-year-old mission. Charlie D'Agata reports from mission control in Darmstadt, Germany.
