Ukraine’s surprise Sunday attack on Russian offensive weapons caches may be a good time for the U.S. to reflect on its own weaknesses, should one of its adversaries attempt a similar strike.

The Space Shuttle Columbia accident remains one of the most tragic and significant events in the history of space exploration. On February 1, 2003, during re-entry into Earth’s atmosphere, Columbia ...

Harris, the first African American to perform a spacewalk, flew on two shuttle missions. Whitson, set to command Axiom Mission 4, holds the record for most time in space by a U.S. astronaut.

Venus is concealing at least three city-killer asteroids that could strike Earth in weeks without ... “Twenty co-orbital asteroids [space rocks in the orbit of two celestial bodies] of Venus ...

"Once fully constructed the 'Golden Dome' will be capable of intercepting missiles even if they are launched from other sides of the world and even if they are launched from space," Trump said in the ...

Following the loss of shuttles Challenger and Columbia, NASA Stennis teams completed rigorous test campaigns to ensure future mission safety. The space shuttle main engine arguably became the most ...