Hubble caught a star exploding — and it’s helping map the cosmos

In the sprawling Hydra constellation, 137 million light-years away, lies NGC 3285B—a dazzling spiral galaxy recently spotlighted by NASA’s Hubble Space Telescope. This cosmic beauty orbits the edges of the massive Hydra I galaxy cluster, home to some of the universe’s largest elliptical galaxies. What drew astronomers’ eyes was a brilliant Type Ia supernova, a cataclysmic stellar explosion bright enough to briefly rival billions of Suns.

source https://www.sciencedaily.com/releases/2025/07/250722035656.htm