Scientists have discovered two rare white dwarfs—which are among the dimmest stars in the universe—that feature changes in their surface composition caused by magnetic fields. This brings the ...

White dwarfs are the core remains of sun-like stars that have used up all their usable nuclear fuel. In five billion years' time, our sun will turn into a white dwarf after its red giant phase.

A study of more than 26,000 white dwarf stars has confirmed a long-predicted but elusive effect in these ultra-dense, dying stars: Hotter white dwarfs are slightly puffier than cooler ones, even when ...