Cambridge, Ma – Astronomers at the Harvard-Smithsonian Center for Astrophysics (CfA) have found that a supernova discovered last year was caused by two colliding white dwarf stars. The white dwarfs ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: University of ...

Astronomers have found visible evidence for the first time that a star detonated twice to terminate its life. Researchers have discovered patterns in the centuries-old remains of supernova SNR 0509-67 ...

A mysterious remnant from a rare type of supernova recorded in 1181 has been explained for the first time. Two white dwarf stars collided, creating a temporary 'guest star,' now labeled supernova (SN) ...

There's a fascinating white dwarf star in our (relatively) nearby neighborhood with atmospheric characteristics like we've never seen before. Share on Facebook (opens in a new window) Share on X ...

In 1181 AD, a bright "guest star" was observed to linger in the sky for around six months. Nearly 850 years later, the likely remnants of this event were rediscovered and tentatively linked to the ...

WEST LAFAYETTE, Ind. — New images from the James Webb Space Telescope that show intricate details of a supernova remnant called Cassiopeia A, a shimmering interstellar structure already under analysis ...

This illustration charts the evolution of the SNR 1181 remnant, from its creation when a carbon-oxygen-based white dwarf and oxygen-neon white dwarf merged, to the formation of its two shock regions.