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.

NASA astronaut Don Pettit will return to Earth from the International Space Station Saturday, alongside his two Russian cosmonaut colleagues.

Cake, gifts and a low-key family celebration may be how many senior citizens picture their 70th birthday. But NASA’s oldest serving astronaut Don Pettit became a septuagenarian while hurtling towards the Earth in a spacecraft to wrap up a seven-month mission aboard the International Space Station (ISS).