“”Hedgehog is a different kind of robot that would hop and tumble on the surface instead of rolling on wheels. It is shaped like a cube and can operate no matter which side it lands on,” said Issa Nesnas, leader of the JPL team.
The basic concept is a cube with spikes that moves by spinning and braking internal flywheels. The spikes protect the robot’s body from the terrain and act as feet while hopping and tumbling.”
See more, including the video, at jpl.nasa.gov.