Moon Set from Space: Astronaut Terry Virts posted this video and wrote, 'Full #moon setting over Hokkaido and Vladivostok.' Virts and #ESA astronaut Samantha Cristoforetti were in the U.S. Quest airlock yesterday conducting airflow monitor tests, measurements and calibrations. The tests were part of the Airway Monitoring experiment that is looking for possible indicators of airway inflammation in astronauts during spaceflight. Credit: NASA #nasa #space #iss #spacestation #moon #exp42 #astronauts