Journey with a select group of Earth's Mightiest Heroes as they embark on a quest of cosmic proportions! When the Celestial Madonna known as Mantis sends out a space-spanning SOS that is received by the Vision, the Avengers' resident android gathers an elite unit of heroes - including Thor, Scarlet Witch, and Silverclaw - to come to her rescue. But what happens when the big bad gunning for Mantis turns out to be the nigh-omnipotent (and Death's main squeeze) Thanos of Titan? Why, a galactic-sized dose of stellar excitement, brought to you as only Marvel Comics can bring it! COLLECTING:Avengers : Celestial Quest 1-8