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Scientists Say They Have Created the First Electromagnetic Vortex …
网页18 小时之前 · “The principle involves utilizing ultra-wideband, radially polarized, conical coaxial horn antennas to create a rotating electromagnetic wave structure,” the scientists said in a press ...
The Earth Is Getting a Mini-Moon—but Only for About a Month
网页19 小时之前 · On August 7, 2024, NASA’s Asteroid Terrestrial-impact Last Alert System (ATLAS) detected a space object that, for a little more than a month, will become a mini-moon of Earth. Named 2024 PT5 ...
The Best Tailgating Essentials of 2024 - Supplies for Tailgating
网页15 小时之前 · Nomad Grills Grill & Smoker. $695 at Bespoke Post. Credit: Danny Perez. The Nomad Grill is the most capable portable grill I’ve used and even doubles as a smoker for added versatility. It folds ...
Why America Is Scrapping Its Sixth-Generation Fighter Program
网页10 小时之前 · Originally conceived of in the late 1980s, the F-22A is still highly capable, but the service believes a new plane with new tech is necessary to dominate current and future Russian and Chinese ...
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Scientists Just Used Really Old Satellites to Find 3,000-Year-Old ...
网页20 小时之前 · A type of ancient hydraulic structure designed for water distribution in arid environments, the aqueducts feature subterranean channels transporting water from highland or mountain areas. While ...
Science News - Exploring Energy, the Earth, and Math - Popular Mechanics
网页2 天之前 · An Ocean Divides Matching Dinosaur Footprints. By Tim Newcomb. Aug 30, 2024. From the hardest math problems to the climate crisis, we're investigating the latest information on science, math, and ...
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