An experiment involving a sealed box that unexpectedly bursts open. The video shows pressure buildup, timing, and the moment the box fails, breaking down what causes a sudden explosion.

A strange cosmic blast that lit up the sky in two distinct acts is forcing astronomers to rethink how stars live and die. The event, tagged AT2025ulz, appears to be the first known case where a ...

A double explosion, in which a dying star split, then recombined, may be a long-hypothesized but never-before-seen "superkilonova." ...