NASA missions track record-breaking radio burst from sun

When NASA scientists first observed a particular radio burst from the sun in August 2025, there was nothing unusual about it. But then the radio burst kept going. Typically, solar radio bursts like these last a few hours to days. But this one was different. By the time it was over, the radio burst had lasted 19 days—far exceeding scientists’ expectations and the previous record, which lasted just five days.