Unexplained Exploding Object
Hubble just spotted something, and we don't have a friggin' clue what it is. This is why I like science, they admit they don't know what it is, so rather than make up a story and run with it, they come up with a bunch of stories (or hypothesis) and then here's the nifty part, they test 'em. Whoa. Might have to go ask Phil about this.