Astronomers have intensely studied a zombie star lurking in the heart of supernova wreckage. Such a cosmic explosion should have destroyed this undead white dwarf star, but instead, it marked its ...

the zombie star can undergo the process more than once. The SN 1181 event was investigated using massive amounts of data from the Keck Cosmic Web Imager, a spectrograph that towers 13,000 feet ...

The team of cosmic homicide detectives determined a strange X-ray signal is the dying scream of a planet destroyed by a superdense stellar corpse called a white dwarf. The signal, which originates ...