Spacesuit ‘take me home’ feature could save lost astronauts

The trick is to equip the suit with sensors that track motion and position relative to that of a relatively stationary object like a spacecraft, with alternative methods if one system or another doesn’t work. Since GPS isn’t exactly viable in space, it could use star tracking or vision-boosted navigation to get bearings. Draper is hoping for an autonomous system that would trigger thrusters all