Environmental concerns grow as space tourism lifts off

After years of waiting, Richard Branson's journey to space this month on a Virgin Galactic vessel was supposed to be a triumphant homecoming. Instead, the jaunt attracted significant criticism—about its carbon footprint.

Why space shuttle fleet is retiring, what's next

As the space shuttle program winds down, questions are flying about what's happening and why. The launch countdown began Friday for the second-to-last flight. Some answers about the end of the space shuttle:

SpaceX to launch rocket Dec 19, six months after blast

SpaceX on Thursday announced plans to launch its Falcon 9 on December 19, its first mission since a massive explosion after liftoff destroyed the rocket and its space station cargo six months ago.

J-2X engine ready for second test series

(Phys.org) -- The next-generation engine that will help carry humans deeper into space than ever is back, bigger and better. The J-2X engine is currently on the A-2 Test Stand at NASA's Stennis Space Center in Mississippi ...

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