The US Space Force released a list Friday of a dozen companies working on Space-Based Interceptors for the Pentagon’s Golden Dome initiative, a multilayer defense system to shield US territory from drones and ballistic, hypersonic, and cruise missile attacks. The roster of Golden Dome Space-Based Interceptor (SBI) contractors, some of which were previously reported, includes

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Shortly after their discovery, carbon nanotubes seemed to be a material wonder. There were metallic and semiconducting forms; they were tiny and incredibly light; and they could only be broken by tearing apart chemical bonds. The ideas for using them seemed endless. But then the reality of working with them set in. It was hard

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A new approach Supercomputer simulations reveal the effect of the strong nuclear force on the muon’s magnetism. Credit: University of Wuppertal Supercomputer simulations reveal the effect of the strong nuclear force on the muon’s magnetism. Credit: University of Wuppertal This latest measurement focuses on strong force effects, specifically the “hadronic vacuum polarization,” which arises as

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Moving to a solar-dominated grid When it comes to supplying electrons for those alternatives, the central story is solar power. “The absolute increase of solar PV generation in 2025 is the largest ever observed for any source,” the IEA says, “excluding years marked by rebounds from global economic shocks such as COVID-19.” In other words,

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Bruce lost his upper beak in an accident when he was very young. Ximena Nelson Bruce lost his upper beak in an accident when he was very young. Ximena Nelson Bruce “jousting” with another male. Alex Grabham Bruce “jousting” with another male. Alex Grabham Bruce runs and jumps to “joust” with opponents from a distance.

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The Pentagon has canceled a ground control system for the US military’s GPS satellite navigation network after the program’s enduring problems “proved insurmountable,” the US Space Force announced in a press release Monday. The Global Positioning System Next-Generation Operational Control System, known by the acronym OCX, was officially canceled by Michael Duffey, the Pentagon’s defense acquisition

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Nearly 10 years after Kara Kenan of North Carolina finished treatment for advanced breast cancer, her routine bloodwork revealed an increased level of an enzyme called alkaline phosphatase. Kenan’s primary care doctor didn’t think that was important, so he ordered no further tests. But Kenan, who directs marketing for the advocacy group Cancer Nation, knew

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For close to a century, geoscientists have pondered a mystery: Where did Earth’s lighter elements go? Compared to amounts in the Sun and in some meteorites, Earth has less hydrogen, carbon, nitrogen and sulfur, as well as noble gases like helium — in some cases, more than 99 percent less. Some of the disparity is

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We often learn about the past visually — through oil paintings and sepia photographs, books and buildings, artifacts displayed behind glass. And sometimes we get to touch historical objects or listen to recordings. But rarely do we use our sense of smell — our oldest, most primal way of learning about the environment — to

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Mary Gay Scanlon cut her teeth in Congress scrutinizing Big Tech’s enormous power over Americans’ lives. As she and fellow representatives on the Judiciary Committee set about their 16-month investigation, she was itching to explore corporate misconduct across a wider swath of industries. “It seemed like an area that was ripe to address,” Scanlon, a

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