NASA's Perseverance rover's Mastcam-Z camera captured the Ingenuity helicopter's 47th Mars flight. Credit: Space.com | ...
U.S. forces boarded another oil tanker in the Caribbean Sea, according to the U.S. military on Friday, as the Trump ...
Sam Eckholm on MSNOpinion
Why this helicopter looks like it came from the future
The Sikorsky S-97 Raider was built to do what conventional helicopters simply cannot. Using coaxial rotors and a rear pusher ...
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