Germany's CESAR crowned king of rovers in ESAs Robotics Challenge A robot rover designed by a Bremen university team has won an ESA contest to retrieve soil samples from a lunar-style terrestrial crater. Eight student teams fielded rovers during the event, their progress monitored by an advanced 3-D viewer already flight-tested in space and planned for eventual deployment on the Moon. Craters surrounding the Moon's poles are a top 21st Century science target. Lunar researchers believe these craters may be 'cold traps', preserving ancient water ice deposits. Such ice would not only be an invaluable time capsule, it would also support manned lunar settlements. But the only way to verify the ice is there is to go fetch it, which is where rovers come in.