THE CELESTIALS HAVE ARRIVED! In your first look at Uncanny X-Men #3, from the team of Kieron Gillen, Carlos Pacheco, Paco Diaz, & Rodney Buchemi, Cyclops and his Extinction Team must protect mankind not only from Mr. Sinister...but the world ending space gods! Sinister's quest for supremacy has doomed the entire world and it's all crumbling down around the feet of the X-Men. Are the Children of the Atom finally spread too thin? Find out this December in Uncanny X-Men #3!