article_snippet.sent: Scroll down for video .
article_snippet.sent: Orbiting space station - Planetary environmental monitoring/Research .
article_snippet.sent: On the right is an artificial gravity test Nasa performed in September 1966.
article_snippet.sent: Astronauts on the ISS
article_snippet.sent: Scott Kelly Scott Kelly is spending a year on the ISS to see what effects such conditions have on the human body for a prolonged period of time .
article_snippet.sent: Shown are Nasa's Robert L. Curbeam, Jr. (left) and Esa's Christer Fuglesang above New Zealand in 2006 .