A NASA spacecraft that spent seven years mapping Earth's invisible radiation shields has made its final journey home and it came back years ahead of schedule. Van Allen Probe A, launched in 2012 to study the powerful belts of charged particles that wrap around our planet, re-entered Earth's atmosphere in March 2026, most of it burning up in a blaze of friction and heat. What brought it down early wasn't a malfunction or a mission decision. It was the Sun and that twist in the story tells us something important.
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