Get up to speed on gamma rays, the radiation responsible for creating the Red Hulk in Captain America: Brave New World.

A huge detector in the Mediterranean Sea spotted the most energetic neutrino from space to date. The particle could shed light on the universe’s most extreme phenomena.

Although still under construction, the sea-floor KM3NeT detector spotted a neutrino 20 times more powerful than any ...

One of those detections was EP240408a, an unusual blast that lit up discussions between astronomers. Zhang and his colleagues ...