Japan's new HTV-X cargo spacecraft departed the International Space Station today (March 6) after a four-month stay. The vehicle — known as HTV-X1, because it's the first of its kind — was released by ...

Japan’s HTV-6 cargo vehicle has completed its destructive re-entry on Monday, February 6, following its departure the International Space Station (ISS) over a week ago. The spacecraft performed ...

An unmanned glider streaks over the Pacific Ocean at 20 times the speed of sound in a video released Thursday by a U.S. defense research agency experimenting with technology that could give the ...

DARPA has confirmed the splash down of its unmanned Falcon Hypersonic Technology Vehicle (HTV-2) following the hypersonic vehicle's second test flight on August 11. While a "controlled descent" ...

Japan's first unmanned space cargo ship cast off from the International Space Station Friday as it nears the end of a successful maiden voyage. Astronauts aboard the station used the outpost's robotic ...

The first - and perhaps only - video footage of the ill-fated second test-flight of DARPA's Falcon Hypersonic Technology Vehicle 2 (HTV-2) has been released. Shot with a handheld camera by a ...

The Japanese H-II Transfer Vehicle-5 (HTV-5) resupply spacecraft successfully arrived at the International Space Station (ISS) on Monday. Following its launch into space from the Tanegashima space ...

US military officials have lost contact with the fastest plane ever built during a hypersonic test flight over the Pacific on Thursday. The Falcon HTV-2 was launched aboard a rocket from Vandenberg ...

It's the end of an era. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates on rocket launches, skywatching ...

DARPA has released the findings from an independent engineering review board on what caused the Hypersonic Technology Vehicle (HTV-2) to fail nine minutes into its August 11, 2011 test flight. On that ...