That plane, famously piloted by Chuck Yeager, was the first aircraft to break the sound barrier—a feat that many believed could not be accomplished. Then there was the X-15, which was built to ...

Long before the first rays of sunlight brushed the California horizon, an extraordinary homecoming took place. The U.S.

In 2006, the Air Force announced the development of its own variant of the space plane, known as the X-37B, designed to operate ... and had a wingspan of about 15 feet. Its max takeoff weight ...

Explore the results of the seventh mission of the U.S. Space Force reusable spacecraft, X-37B, with its return to Earth ...

The U.S. military's classified mini space shuttle returned to Earth on Friday after circling the world for 434 days.

The US government's top-secret X-37B space plane returned to Earth after a 434 ... the 29-foot-long X-37B with a 15-foot wingspan is designed to test advanced technologies, including propulsion ...

The US Space Force's secret space plane, the X-37B, shared an image from orbit for the first time ... The uncrewed test vehicle was nearly 30 feet long and had a wingspan of about 15 feet. Its max ...

A camera onboard the secret X-37B space plane capturing Earth's picture ... the 29-foot-long X-37B with a 15-foot wingspan is designed to test advanced technologies, including propulsion systems ...

Throughout its 15 years in operation, X-37B has set new records for time in orbit with each flight. According to the space plane manufacturer Boeing, X-37B spent 908 days in orbit during its last ...

The American space agency plans to have a supersonic aircraft called X-59 in the air sometime ... will fly accompanied by a chase plane. This machine, an F-15 specially modified and properly ...