The European Space Agency (ESA) has launched one of its most precise science experiments to date — the Atomic Clock Ensemble ...

Students at Woodland Park High School got to ask their biggest questions about space directly to an astronaut floating among ...

HOUSTON—Russia's Soyuz MS-26 spacecraft with NASA astronaut Don Pettit and cosmonauts Alexey Ovchinin and Ivan Vagner departed the International Space Station (ISS) for a parachute-assisted landing ...

Testing Einstein’s relativity, measuring fundamental constants, and even searching for dark matter are all on the cards ...

A camera affixed to the International Space Station recently spotted some curious symbols amid a barren desert landscape.

April 21 (UPI) -- NASA launched its latest cargo run to the International Space Station early Monday morning.

The SpaceX Dragon spacecraft, carrying approximately 6,700 pounds of cargo to the orbiting laboratory for NASA, lifted off at ...

SpaceX launched a Dragon spacecraft to the International Space Station April 21 whose cargo includes more crew supplies and ...

Don Pettit, NASA's oldest active astronaut, marked his 70th birthday by landing on the steppe of Kazakhstan after 220 days in ...

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