Seeing 16 Sunrises in 24 Hours, Astronauts Need Different Ways to Tell Time in Space
[html]A normal clock and routine won’t work while astronauts travel in space. Learn what helps them keep track of their days when traveling to the moon or orbiting Earth.[/html]
Source: Seeing 16 Sunrises in 24 Hours, Astronauts Need Different Ways to Tell Time in Space (http://ht**://www.discovermagazine.c**/the-sciences/seeing-16-sunrises-in-24-hours-astronauts-need-different-ways-to-tell-time)