Knowhere

Knowhere is a fictional planetoid featured in the Marvel Cinematic Universe. It first appeared in the 2014 film Guardians of the Galaxy. It also appeared in Avengers: Infinity War.

In the Marvel Cinematic Universe, Knowhere was utilized as a mining colony, with various inner-city environments and labor guilds working to mine organic fossilized remnants from the dead Celestial. These operations were primarily spearheaded by the Tivan Group, which was led by the Elder of the Universe known as Taneleer Tivan, aka The Collector. The Collector also maintained a private museum on Knowhere. The museum housed various artifacts as well as races, including a Chitauri warrior, an Asgardian Dark Elf, a Duckworldian named Howard, the telepathic cosmonaut dog Cosmo, the Aether (aka the Reality Gem), and an evolution cocoon. Maintenance of the museum was governed by Tivan's assistant, the Krylorian slave known as Carina.

The Guardians of the Galaxy brought the Power Stone to Knowhere where Gamora sold it to the Collector. Carina, seeing an opportunity to free herself from a life of slavery, grabbed the stone and attempted to use it against Taneleer Tivan. However, her body was not strong enough to contain the power of the stone, and she exploded. The resulting blast destroyed a great deal of the Collector's wares.

The Kree warrior Ronan the Accuser, who had been pursuing the Power Gem, tracked it to Knowhere. Ronan sent his Necro-soldiers to acquire it, while he had to deal with a revenge-driven Drax the Destroyer. Peter Quill, Gamora, Groot, and Drax, managed to escape from Knowhere with the Power Gem aboard a Necrocraft.

A few years later, the Mad Titan Thanos came to Knowhere in search of one of the Infinity Gems. He decimated a large portion of Knowhere, including the Collector's museum. The Guardians arrived to combat him, but were easily overpowered. The fate of the Collector, as well as Cosmo at this time remained unclear.