A Mars lander's digger is burrowing into the red planet again after hitting a snag seven months ago.
NASA said Thursday the mechanical mole has penetrated three-quarters of an inch (2 centimeters) over the past week. While just a baby step, scientists are thrilled with the progress.
Mole - Experiment - Scientist - Tilman - Spohn
"We're rooting for our mole to keep going," said the experiment's lead scientist, Tilman Spohn of the German Aerospace Center, in a statement.
The German device is meant to penetrate 16 feet (5 meters) into Mars to measure internal temperatures. It barely got a foot down (30 centimeters) before stalling in March, soon after starting to hammer. Over the weeks and months, engineers...