Greenland ice sheet rover
NASA reports that its Greenland Rover, or Goddard Remotely Operated Vehicle for Exploration and Research (GROVER for short) has begun tests on the Greenland ice sheet. The GROVER is an autonomous solar-powered robot which carries ground-penetrating radar to explore the levels of snow and ice accumulation on the arctic ice pack. It will be used to chart the gains and losses in ice across the ice sheet.