A star has been seen exploding faster than any other on record

The quickest supernova we’ve ever seen went from invisible to extraordinarily bright in only 2.2 days. It is the first of these speedy stellar explosions that’s been observed thoroughly enough to help us figure out exactly how they work. Supernovae are massive explosions that happen when a star burns out. They usually take weeks or months after the death of the star to reach maximum brightness, and even longer to fade away.
Read more: https://www.newscientist.com/article/2164876-a-star-has-been-seen-exploding-faster-than-any-other-on-record/?source=Snapzu