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.

Atlantis has blasted off on NASA's last space shuttle launch. The historic liftoff occurred Friday morning,July 8th, 2011, 30 years and three months after the very first shuttle flight. Four astronauts are riding Atlantis to orbit. The shuttle is bound for the International Space Station, making on...

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...

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.

Launched on Feb. 11, 2010, the Solar Dynamics Observatory, or SDO, is the most advanced spacecraft ever designed to study the sun. On June 5 2012, SDO collected images of the rarest predictable solar event--the transit of Venus across the face of the sun. This event happens in pairs eight years apa...

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.

The Atlantis landing at Kennedy Space Center in 2010.

NASA Launch Commentator George Diller opens coverage of the Grail mission right before launch on September 10, 2011.