Researchers from NASA Johnson Space Center Neurosciences Laboratory and National Space Biomedical Research Institute are testing a new system that may make astronauts’ return to Earth a bit easier. If you’ve ever seen space travelers land back on terra firma after months in orbit, you must have noticed that they are usually carried by others or use wheelchairs. This happens because over time our sensory system forgets how to coordinate using gravity as one of the inputs. The new system may end up being used on spacecraft to keep astronauts from forgetting how to walk when gravity comes back to them.