SpaceX's Dragon capsule still has to chase down and berth with the space station.

Engineers will check repairs made to a faulty engine valve on the Falcon 9 rocket.

The Falcon 9 rocket is due to loft SpaceX's Dragon capsule to orbit at 4:55 a.m. ET.

Some special mementos are hitchhiking on SpaceX's first-ever launch to the International Space Station.

Fifteen experiments and mission patches designed by students will ride SpaceX's Dragon.

(Phys.org) -- Chaotic networks of dust and gas signpost the next generations of massive stars in this stunning new image of the Cygnus-X star-nursery captured by ESA’s Herschel space observatory. Cygnus-X is an extremely active region of massive-star birth some 4500 light-years from Earth in the constellation of Cygnus, the Swan.Using ...

Chaotic networks of dust and gas signpost the next generations of massive stars in this stunning new image of the Cygnus-X star-nursery captured by ESA’s Herschel space observatory.

The space tourism company hopes to send pairs of deep pocketed adventurers on flights of a lifetime, where they can spend a relaxing few minutes in zero gravity and return where they've departed from on a pillow of rocket engine fire.

Space shuttle Enterprise, mounted atop a NASA 747 Shuttle Carrier Aircraft (SCA), is seen as it flies near the Empire State Building, Friday, April 27, 2012, in New York.

Riding atop NASA’s modified Boeing 747 carrier aircraft, NASA’s drop-test article – the not quite an Orbiter Enterprise – flew to the New York area on April 27the 2012. It’s final home: the Intrepid Sea Air and Space Museum.