Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...
Harvard's Avi Loeb claims the 3I/ATLAS object might be an alien battleship, but NASA experts insist the data confirms it is ...
WASHINGTON — A DARPA official said the agency canceled a space nuclear propulsion project it was jointly developing with NASA in part because the effort was overtaken by advances in more conventional ...
Bionic bladeless propellers, inspired by the effortless movement of jellyfish, are transforming aquatic propulsion. Traditional propellers are noisy, inefficient, and hazardous to marine life, but ...
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