Aki Hoshide running Time

JAXA astronaut Aki Hoshide running the Time experiment during on the International Space Station, 19 May 2021.

ESA astronaut Thomas Pesquet commented on this picture: "No Aki is not asleep! He’s performing the European experiement TIME to see how astronauts' reaction times and sense of time changes in space. The virtual reality headset blocks visual cues from the outside world (Aki probably didn't know I was taking this picture) so the scientific data is more precise. Mission control and researchers want to know how we do because if our sense of timing changes in space it could have very large consequences for missions far away on the Moon or Mars, don't want to be late for a landing on another planet!"