A detailed image of a supernova remnant showcasing intricate cosmic patterns and celestial beauty.

Catching the first heartbeat of a star’s death.

In 2016, SN **2016gkg** revealed the initial shock breakout—the first time seen in visible light.

Supernova: Catching The First Flash

Abstract image of shimmering particles resembling a starry night sky on a black background.

Shock breakout, explained

As the blast reaches the surface, a brief ultraviolet flash erupts, lasting only hours. It’s usually missed.

Supernova: Catching The First Flash

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