It is unknown who or what can decapitate a being as powerful as a Celestial, but its severed head serves as a home to many that have stumbled upon it. No one knows exactly how Knowhere came to be, but it is the last known place in all creation. It drifts closer to the edge of the universe until one day it will cease to exist, but before that happens, all different species from all different points in space and time come to Knowhere to study and observe the end of the universe from the closest accessible structure.

It was a generally peaceful environment until the Luminals came to Knowhere with an ominous looking box shaped like a coffin. Inside the box was the Luminals greatest enemy, Abyss, and the Luminals hoped to cast him out to the end of the universe where he would be destroyed forever. However, Abyss was determined to escape, and a sudden attack killed some of the inhabitants of Knowhere mutating them into zombies. Knowhere’s Chief of Security, Cosmo, got the rest of the population to safety, but it wasn’t until the arrival of Nova that Cosmo had a chance of truly saving them. Together the two of them battled the forces Abyss set against them, and once Nova defeated the monster, all the zombies turned to dust and the residents could be returned to some semblance of normalcy. After Cosmo used the Continuum Cortex to send Nova to the homeworld of the Phalanx, a Phalanx converted Gamora and Drax needlessly slaughtered some of Knowhere’s innocents in order to follow Nova through the Cortex.

Knowhere now serves as the base of the Guardians of the Galaxy.