Elon Musk is a notorious workaholic. As the head of SpaceX and Tesla has long made clear, he doesn't really need much vacation.

Amy Wilkinson spent five years interviewing 200 leading entrepreneurs whose companies each generate $100m annually.

SpaceX boss Elon Musk says a recent explosion was the company's first failure in seven years and maybe complacency played a part.

Meet the four astronauts going on the first commercial mission to space.

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.

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.