This week's Heavenly Body is actually an entire star system. A star system that was destroyed by Jean Grey of X-Men fame. Well okay, technically it was the Phoenix force that did the killing, but it was in poor Jean Grey's name in which this genocide occurred. All this happened back during The Dark Phoenix Saga in the hey day of the comic book known as Uncanny X-Men. To be more exact, it happened in issue #135. Jean Grey, one of the original X-Men for those who are unawares, had been taken over by the Phoenix Force, and eventually it drove her mad, and she became Dark Phoenix, at which time, the super bitch goes and eats a sun, which ends up going all super nova on us, and destroys the planet of D'Bari, and every last soul on said planet. Here's a panel from this tragic event.
But, Jean grey was still in there somewhere, and she couldn't live with what she had done, so she ends her life, and destroys the Phoenix...only to have it reborn again, as the Phoenix is wont to do. Of course, it ended up that Jean was actually deep under the river, and the Phoenix wasn't really her, but somebody was inside there, somebody with enough reasoning to destroy the damn thing. Eventually the Phoenix Force came back and took over Jean's widower Scott Summers (among others), and made him kill his mentor, Charles Xavier. Meanwhile Jean sorta came back in the form of Madelyne Pryor, who was actually the Goblin Queen, and then Jean actually came back to life, only to die again...and again, and again. More recently, a sixteen year old Jean Grey was brought into the present day (damn you and your time warping ways, Hank McCoy) and was put on trial by the Shi'ar Empire, even though she hadn't technically committed genocide yet in her life. Yeah, the X-Men universe can get a bit convoluted.
That's it gang. See ya 'round the web.