Located within what appears to be a severed head of a Celestial floating along The Rip, Knowhere acts as a makeshift port of call and observatory of the End of the Universe for intergalactic travelers of all species and from all times. First appearing in Nova #8, the station is administered by its chief of security, Cosmo, a telepathic and telekineticSoviet space dog originally lost in Earth orbit in the 1960s. Knowhere maintains minor facilities for close observation of the end of the Universe, a main hall, a marketplace and other amenities including the bar, Starlin's. Cosmo assigns special "passport" bracelets allowing instantaneous transportation to and from anywhere in the Universe via the deceased Celestial's "Continuum Cortex", located within the brain-stem, from where sensors can also detect subtle disruptions in space-time occurring outside The Rip in the greater Universe. Facilitated by Cosmo and Richard Rider, Knowhere is now used as the base of operations for the new Guardians of the Galaxy. The origins of Knowhere are uncertain. It is unknown as to how the severed head of a Celestial would have appeared at the end of the Universe, and what kind of forces could conceivably decapitate the God-like alien. Abnett and Lanning have said that the origin is "A mystery that will have to wait for now, but it's a biggie!" While recounting his origin to Eddie Brock, the Symbiote God Knull revealed that he was the one who killed the Celestial whose head became Knowhere with the use of All-Black The Necrosword and used his head to create more symbiotes.
Other versions
During the Secret Wars storyline, Knowhere is shown to be the Moon that orbits Battleworld. Its origin is that this Knowhere is the head of a Celestial that came to collect Battleworld but was slain in battle by God Emperor Doom and its head is still in orbit around Battleworld as a reminder of Doom's power.
In other media
Television
Knowhere appears in the Guardians of the Galaxy TV series. Like the comics, Cosmo the Spacedog serves as the chief of security when first encountered by Rocket Raccoon and Groot. It first appears in the episode "Road to Knowhere" in order to sell an item stolen from Korath the Pursuer in its market. It is here that Star-Lord learns that he is part-Spartax. During the fight between the Guardians of the Galaxy, Korath the Pursuer's group, and the Ravagers, Knowhere starts to come to life and ensnare everyone.
Film
The Collector's base is visited in the post-credit scene of '. The building is subsequently revealed to be located on Knowhere in Guardians of the Galaxy.
Knowhere is featured as a location in the 2014 filmGuardians of the Galaxy. In the film, Knowhere serves as the headquarters of the Collector, Taneleer Tivan. Tivan Corporation is mining the head of the deceased Celestial for tissue and other cellular material to sell on the black market.
Knowhere is featured in ', where the Guardians of the Galaxy confront Thanos after he takes the Reality Stone from The Collector.
Video games
Knowhere appears as a location in the ' Guardians of the Galaxy play set.
Knowhere appears as a stage in Marvel vs. Capcom Infinite, merged with the Third Moon from the Strider series to become Knowmoon.
