The weekly weird
Spacesuits with ‘take me home’ buttons!
In science fiction movies, we frequently see accidents that cause astronauts to float away into space. Though this has yet to happen in the real world, it is a risk every astronaut is well-aware of when embarking on a spacewalk or Extra Vehicular Activity (EVA).
To prevent the nightmare scenario, space explorers are not only tethered to the spacecraft but also fitted with a backup safety kit; dubbed Simplified Aid For EVA Rescue (SAFER), the “life jacket,” which is worn like a backpack, contains a bottle of pressurised nitrogen and tiny thrusters.
In the unlikely event that an astronaut gets untethered, he/she can use the joy-stick-like controller attached to the front of the spacesuit to return to the spacecraft. The only drawback is that SAFER is manually operated, so of no use if the astronaut becomes unconscious, gets injured, or is simply too panicked to navigate back.
To solve the problem, the Charles Stark Draper Laboratory, is working with Nasa to create an application to automate SAFER.