The greatest fear for many astronauts is to get lost or disoriented during a spacewalk, especially if it's untethered. How do you get back to safety with no sense of direction, little to no help and a limited supply of oxygen? Researchers at Draper might offer a lifeline. They recently applied for a patent on a self-return feature in spacesuits that would automatically navigate back to the astronaut's home ship. A spacefarer in a panic could just slap a button and know they would get back to the airlock.