An asteroid passed 428 km from Earth and no one saw it coming

Last year, an asteroid called 2025 TF zipped past Antarctica at an altitude of 428 kilometers — no higher than where the ISS orbits. Nobody saw it coming. The Catalina Sky Survey picked it up only after it had already gone by, according to a data visualization by Pascal Bürkle at the Datawrapper blog. — Read the rest

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