The Marvel Cinematic Universe, MCU, contains planets, stars, a large amount of galaxies, the contents of intergalactic space, and all matter and energy. The MCU is linked with the DCEU, creating a twin universe. This universe is where the entirety of the Marvel Cinematic Universe takes place.
The MCU cosmos is shaped like a big ball. This ball is divided up in two halves: the lower half is the realm of the living (or "the Universe") and the upper half is the afterlife (or "the Cosmos"), with Hell located between the two halves, the Demon Realm is located in the bottom of the living universe.
