A rush to watch a supernova exposed its last gasp before exploding

Quick Action Let Hubble Watch the Earliest Stages of an Unfolding Supernova Detonation

Astronomers might have found the first exoplanet outside of our Milky Way. Revealed by X-rays, the bizarre world is about as big as Saturn, has lived through a nearby supernova, currently orbits a black hole or neutron star, and is destined to experience a second nearby supernova in the future.

Astronomers witnessed the spectacular death of a star as it happened - Observations with multiple telescopes yield new insights into the final stages in the evolution of a massive star before it exploded in a core-collapse supernova