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Physicists use gravity to bend light to create new mobile sensing device

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Optical fiber sensor Li

Astrophysicists often talk about gravitational lensing, one of the most interesting aspects of light’s infamous particle-wave duality. This phenomenon shows in a predictable and measurable way how the small mass within each photon of light shooting out from a distant star actually bends the light in the gravitational pull of dense objects along its path. … Read more

AST SpaceMobile secures FCC approval to compete with Starlink Mobile

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AST SpaceMobile has received the green light to operate a satellite phone service in the United States, setting the company up to compete with SpaceX’s Starlink Mobile. AST won approval from the Federal Communications Commission on Tuesday to operate its entire constellation of 248 satellites and provide “supplemental coverage from space,” including outside the United … Read more