NASA has successfully tested its X-66 aircraft in a wind tunnel, hoping it can reduce fuel consumption by at least 30%.

Decades before hypersonics entered today's headlines, NASA drafted an aircraft that bordered on surreal. Discover the story behind the X-43 Hyper X.

The future of high speed travel did not arrive with a deafening crack over the ocean, but with a controlled, almost modest ...

A supersonic jet plane designed to make very little noise took flight for the first time this week, cruising over the southern California desert just after sunrise in what could be the first step ...