NASA's 'Lunar Backpack' Could Prevent Astronauts From Getting Lost on the Moon

The Moon is not the kind of place where you want to get lost, but it can get a little tricky trying to retrace your dusty footsteps without a GPS system in place. Thankfully, space engineers may have found a way around this limitation, designing a portable backpack meant to generate a real-time, 3D map of the Moon's...