Board Thread:Questions and Answers/@comment-68.38.63.82-20140802181548/@comment-1894786-20180801033955

Icebankurdotta wrote: He confirmed that the Guardians occupy the Andromeda Galaxy, while the rest of the MCU is definitively within the Milky Way. Both Guardians movies take place in the Andromeda Galaxy (outside of Earth scenes), and most of the rest of the MCU is in the Milky Way. But the Thor movies definitely do not take place in the Milky Way, at least not fully.

Also, let me try to clarify my comment from two years ago towards DJMykee, which is extremely rude and not at all detailed;

The Nine Realms (Midgard, Vanaheim, Svartalfheim, Asgard, Niflheim, Muspelheim, Nidavellir, Jotunheim and Alfheim) are 9 distinct planets out in space, in 9 different galaxies that are extremely far apart from one another. The Nine Realms have a special connection, as they are all part of the Yggdrasil, or Tree of Life. The Tree of Life is actually a massive cosmic cloud that connects the 9 planets with a series of wormholes and portals that span space-time

The Bifrost can manipulate these portals, though it isn't infallible as Loki and Thor were both hurled into Sakaar at different points in time simply by falling out of the wormhole.

The only known Galaxy is Midgard's, being the Milky Way, as Earth is Midgard. There is no "realm" in Andromeda, also known as the Guardians' galaxy, which is the real life neighbor of our own galaxy.

Though in the comics, there is a 10th realm called Heven which was cut off from the Tree, which is where Thor and Loki's sister Angela lived after being believed dead. Angela, aside from being evil, is where the MCU got most of its version of Hela from, being the eldest sister, rightful heir of Asgard, a proud warrior and even once was Queen of Hel, stealing the title from Hela herself. My headcanon has always been that Heven is in the Andromeda Galaxy, as Angela is a very prominent member of the team.