Daniel Perley Browse All Authors Famous Quotes by Daniel Perley This was an incredibly luminous event, brighter than almost any supernova we've ever seen before, the Cow also appeared and faded away very quickly : so quickly that existing supernova models can't properly explain The Cow. The Cow must be a new type of extremely energetic, explosive event. Daniel Perley top-news The properties of the Cow strain nearly all models we have tried to devise to explain it, whatever it is, it must involve some form of energetic and very fast explosion interacting with an extremely dense shell of material very close to the explosion progenitor. Daniel Perley top-news