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A distant neutron star has abruptly erupted in brightness, surging to roughly one hundred times its usual output and leaving astronomers scrambling to explain what could drive such a violent change.

Scientists using NASA’s Swift satellite have spotted a stellar flare on a nearby star so powerful that, had it been from our sun, it would have triggered a mass extinction on Earth. The flare was ...

Berkeley - Razor-sharp optics on ground-based telescopes now allows astronomers to peer at events occurring near the very edge of our galaxy's central black hole, providing new clues about the massive ...