Astronomers witnessed a white dwarf going nova Engadget by Andrew Dalton 3:2
 

When a star explodes, astronomers usually scramble to point their telescopes in its direction, hoping to catch a glimpse of the aftermath. While this is a fine way for learning about the results of a nova or supernova, much less is known about the ev...

https://www.engadget.com/2016/08/17/...rf-going-nova/