NASA astronaut Scott Kelly is on his way back to Earth. Kelly has completed a nearly yearlong mission on the International Space Station, the longest any U.S. astronaut has been in space. He’s set to come home on Tuesday, riding back to Earth on a Russian Soyuz spacecraft. The spacecraft undocked from the station shortly after 8 p.m. ET. Undocking complete at 8:02pm ET! @StationCDRKelly is on his way home from a #YearInSpace pic.twitter.com/qaPqva0jsU — NASA (@NASA) March 2, 2016 Kelly is scheduled to land in the Kazakhstan desert at 10:27 Wednesday morning (11:27 p.m. ET Tuesday).