Supercharged 'cocoon of energy' may power the brightest supernovas in the universe 

 Every so often, astronomers detect a supernova explosion that's 100 times brighter than it should be. A new paper may reveal the strange source of these "superluminous" supernovas. 

https://cdn.mos.cms.futurecdn.net/GrHYzCYkN3ELKStVh3dkUZ.jpg

https://www.space.com/supercharged-cocoon-of-energy-power-brightest-supernovas-in-universe