The first American woman in Space talks about her historic flight on NASA's 50th anniversary. She flew aboard Space Shuttle Challenger in June 1983 on the STS-7 mission.

Astronomers are combing through fresh data from the James Webb Space Telescope in a never-ending quest to find ever-more-distant galaxies. However, the observatory is still studying a variety of objects, from insanely detailed images of Jupiter to the most distant known star.

Launched nearly 28 years ago, the Hubble Space Telescope has changed our understanding of the cosmos, allowing us to calculate the age of the universe and the rate at which it is expanding. Hubble has allow us to peer back to almost the origins of the universe, to locations more than 13.4 billion li...

Meet SpaceX's Dragon V2 spacecraft, the next generation spacecraft designed to carry astronauts to Earth orbit and beyond.

Virgin Galactic’s VSS Unity, the reusable rocket-powered space plane carrying the company’s first crew of tourists to space, has successfully launched and landed.

New Horizons is the first mission to the Kuiper Belt, a gigantic zone of icy bodies and mysterious small objects orbiting beyond Neptune. This region also is known as the “third” zone of our solar system, beyond the inner rocky planets and outer gas giants. Johns Hopkins University Applied Physics L

The Grand Finale - NASA's Cassini spacecraft will dive through the unexplored space between Saturn and its rings. What we learn from these ultra-close passes over the planet could be some of the most exciting revelations ever returned by the long-lived spacecraft. This animated video tells the story...

NASA&s Twin GRAIL spacecraft lift off at 9:08 a.m. EDT on Saturday, September 10, 2011,from Cape Canaveral Florida, on a mission to explore the moon in unprecedented detail.

Another giant leap towards a mission to Mars: expendable structures could be the next extraterrestrial breakthrough, as they weight less to launch and are more compact on the rocket. On arrival, they can be inflated to provide safe and sustainable living quarters, work spaces and laboratories for pe...

Atlas V roars off the launch pad sending NASA's next Mars rover toward the Red Planet. The launch date was November 26, 2011 and the landing in Mars is scheduled for August 6, 2012.