US military is a bigger polluter than as many as 140 countries

The US military's carbon bootprint is enormous. Like corporate supply chains, it relies upon an extensive global network of container ships, trucks and cargo planes to supply its operations with everything from bombs to humanitarian ...

SpaceX cleared for US military launches

The US Air Force has certified private company SpaceX to launch military satellites, opening the doors to a lucrative market previously held solely by a Lockheed and Boeing joint venture.

ESA experts assess risk from exploded satellite

After studying the recent explosive break-up of a US satellite, ESA space debris experts have concluded this event does not increase the collision risk to nearby ESA missions in any meaningful way.

SpaceX sues US Air Force over satellite contracts (Update)

SpaceX on Friday filed suit against the US Air Force for awarding billions of dollars to a single company for national security launches, and said the contracts might even violate sanctions against Russia.

Video: How the Dream Chaser was built

The origins of Sierra Nevada Corporation's Dream Chaser go back over 50 years to the US Air Force's and NASA's research into lifting body concepts and the X-20 Dyna-Soar, so this winged, lifting-body spacecraft is one of ...

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