A 400-year-old explosion, one of the biggest humans have ever witnessed, seen over 25 years as NASA shows Kepler supernova’s uneven expansion

NASA has released its longest-ever time-lapse from the Chandra X-ray Observatory, capturing the expanding remains of Kepler’s Supernova, one of the most powerful stellar explosions ever witnessed by ...
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WATCH: ‘Superkilonova’; a star so nice, it explodes twice

A superkilonova candidate event, named AT2025ulz, was observed in 2025; LIGO and Virgo first spotted gravitational waves, ...

Rare Cosmic Event May Be First-Ever ‘Superkilonova,’ Scientists Say

Astronomers have spotted AT2025ulz, a rare dual explosion — a supernova and a kilonova — that may be the first-ever observed ...