But NASA's oldest serving astronaut Don Pettit became a septuagenarian while hurtling toward Earth in a spacecraft to wrap up ...

Earth Day — an annual holiday celebrating the planet and promoting climate action — turns 55 years old on Tuesday, April 22. Similar to the first Earth Day in 1970, a wave of protests took place ...

A new study shows TOI-270 d is a fiery rocky exoplanet, offering fresh insight into the galaxy’s most common planet type.

America's oldest serving astronaut Dan Pettit has returned to Earth on his 70th birthday. The Soyuz MS-26 spacecraft carrying ...

Don Pettit's birthday "party" brought together Russian recovery teams in Kazakhstan, where it was April 20 (his birthdate).