New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...

A dramatic cosmic event, a rare dwarf nova that suddenly brightened by a factor of 2,500, has been discovered with the help ...

Astronomers have taken the first ever image that shows what happens when a star explodes twice in a supernova.

A supernova explosion occurred on July 4, 1054, resulting from the death of a star estimated to be nine to eleven times the ...

Astronomers have captured the first-ever visual evidence of awhite dwarf star exploding twice in a remarkable supernova event ...

Less than two weeks later, on June 25, reports began to circulate of a second nova blossoming in the southern night sky, this ...

Astronomers have spotted another never-before-seen "nova" blaze to life in the night sky. This may be the first time that ...