Astronaut Scott Kelly is safely back on Earth, and he's already thinking about when he can leave again.
Kelly, who landed on the steppes of Kazakhstan late Tuesday, has spent more consecutive time in space — 340 days — than any other American.
His most recent stint was aboard the International Space Station, where he's lived since March 27. In all, the astronaut has now spent a total of 520 days in orbit across four missions.
Also leaving the station Tuesday were Russian cosmonauts Mikhail Kornienko and Sergey Volkov.