The weird outbursts of a distant supermassive black hole may be caused by a death-defying white dwarf walking a cosmic tight ...

Astronomers have captured the first evidence of a white dwarf, the stellar remnant left over when smaller stars die, coming back to life while feeding on a companion star. The team, led by Durham ...

The white dwarf, RX J0439.8-6809, ... Originally it was thought to be a white dwarf carrying out nuclear fusion on its surface using hydrogen drawn from a companion star.

The explosion of a star, called a supernova, is an immensely violent event. It usually involves a star more than eight times ...