Astronomers have traced the origin of a colossal white dwarf to a catastrophic crash between two dead stars, turning a quiet stellar ember into a cosmic heavyweight. Using the Hubble Space Telescope, ...

This new discovery, published in the journal Nature Astronomy, marks the first time that a white dwarf born from colliding stars has been identified by its ultraviolet spectrum. Prior to this study, ...

White dwarfs are the final stop for stars that aren’t massive enough to go out in a supernova. Think of them as the retirement phase for the vast majority of stars in our universe. When a star ...