“Astronaut-Educator Ricky Arnold Conducts Science on Station” was uploaded to Flickr

Astronaut-educator Ricky Arnold conducts student-designed science on the Space Station. via NASA ift.tt/2rskpSU
embiggen by clicking https://flic.kr/p/26Tv2u7
Astronaut-Educator Ricky Arnold Conducts Science on Station was taken on April 11, 2018 at 04:57AM