WASHINGTON — 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 ...

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 ...

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 ...

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 ...

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 ...

Cake, gifts and a low-key family celebration may be how many senior citizens picture their 70th birthday. But National Aeronautics and Space Administration (NASA)‘s oldest serving astronaut Don ...