Companion star could have triggered supernova

Extra blue light supports explanation for type 1a explosions

supernova

PURPLE HAZE  Supernova SN 2012cg (bright dot, center) exploded in a hazy galaxy (purple) 50 million light-years away. The explosion might have been triggered by a companion star, a new study reports.

Peter Challis/Harvard-Smithsonian CfA

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Astronomy

From the Nature Index

Paid Content