Paul Allen and Richard Branson are focusing on breakthrough spaceflight closer to home: cheap cargo trips to Earth orbit.

The fight over lucrative contracts to launch national security satellites between SpaceX and the ULA has grown even more contentious.

Entrepreneurs are expanding the boundaries of rocket and satellite technology as the US makes room for private enterprise.

Tesla chief executive Elon Musk, warns about artificial intelligence, saying it could be more threatening than nuclear weapons.

The unmanned Antares rocket that blew up in a spectacular fireball in the United States during a launch to the International Space Station was using two 40-year-old Soviet-made rocket engines of the same type as one that exploded during tests in May.

'One giant leap for mankind', proclaimed Neil Armstrong from the moon's surface. Did that just underscore the status of women's future in space?

Billionaire Jeff Bezos will team up with a Boeing-Lockheed Martin to develop US-made rocket engines, in competition with Elon Musk's SpaceX venture.