It's the last clearly observed supernova in the Milky Way, Gassel said.

NASA’s Chandra Observatory reveals a 25-year time-lapse of Kepler’s Supernova Remnant. Glowing debris expands at different ...

Astronomers have captured the clearest-ever close-up images of two exploding stars, events known as novae, within days of their eruption. These detailed images show that such explosions are far more ...