Don Pettit, the oldest serving astronaut at NASA, splashed down to Earth on Sunday, April 20, after spending over 220 days on board the International Space Station (ISS)

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).