Based on a heavily modified McDonnell Douglas MD-90, the X-66 was intended to demonstrate a truss-braced version of the thin wing at full scale. The experimental aircraft formed the flagship of NASA’s ...

Traders work on the floor at the New York Stock Exchange (NYSE) in New York City, U.S., April 23, 2025. REUTERS/Brendan McDermid/File Photo Stocks drifted on Thursday and a rebound in the dollar ...