TIL that last year astronauts in the International Space Station found plankton OUTSIDE one of its windows. They have no explanation for it.

http://www.cnet.com/news/sea-plankton-found-on-the-outer-surface-of-the-iss/



Submitted March 19, 2015 at 06:54AM by fillingtheblank http://www.reddit.com/r/todayilearned/comments/2zjcns/til_that_last_year_astronauts_in_the/