Astronomers today are reporting the first detection of direct radiation from the surface of a white dwarf star in a pre-supernova binary star system using the Hubble Space Telescope. This is a major ...

The Hubble Space Telescope has captured a time-lapse of a supernova in the spiral galaxy NGC 2525, showing the epic explosion and aftermath of a white dwarf slurping up material from a companion star ...

Scientists have found that a nearby two-star system contains a precursor to a Type Ia supernova, an important class of star explosions used to measure the expansion rate of the universe. The ...

For six months in 1181, a dying star left a mark in the night sky. The striking object appeared as bright as Saturn in the vicinity of the constellation Cassiopeia, and historical chronicles from ...