NASA’s oldest serving astronaut returned to Earth on Saturday following a 7-month mission on board the International Space Station (ISS). Don Pettit marked his 70th birthday with a special homecoming, although his post-touchdown appearance raised concerns that the astronaut wasn’t doing so well after landing in Kazakhstan.

Veteran NASA astronaut Don Pettit celebrated his 70th birthday as he returned to Earth from a seven-month stay at the International Space Station

NASA’s oldest active astronaut, Don Pettit, has returned safely to Earth after a seven-month mission aboard the ISS, landing in Kazakhstan on his 70th birthday. With this fourth spaceflight, Pettit’s total time in space now exceeds 590 days—the most by any American male astronaut.