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"A reality where all concepts of time and space become irrelevant as you shrink for all eternity."
Hank Pym[src]

The Quantum Realm is a dimension in the Multiverse only accessible through magical energy, mystical transportation using a Sling Ring, or by tremendous subatomic shrinking caused by the Pym Particles. In the Quantum Realm, space and time are believed to be irrelevant.

History

Final Mission

"Your mom died a hero. And I spent the next ten years trying to learn all I could about the Quantum Realm."
Hank Pym[src]
Access to the Quantum Realm was finally realized by scientist Doctor Hank Pym through the use of Pym Particles, particles of an extra-dimensional nature that are capable of altering the size of beings or objects. Janet van Dyne, Pym's wife and the first person to bear the mantle of Wasp, disappeared into the Quantum Realm after sacrificing her life to disable a Soviet nuclear missile. Janet van Dyne became a resident of the Quantum Realm through this sacrifice. Following this event, Pym dedicated himself to researching the Quantum Realm, though he was unable to generate concrete results or information.[1]

Escaping the Quantum Realm

Ant-Man-0

Scott Lang entering the Quantum Realm

After his battle with Darren Cross, Scott Lang was briefly left trapped in the Quantum Realm, but managed to escape by altering the Ant-Man Suit's mechanisms; replacing the shrinking regulator with an enlarging one by installing a blue Pym Particles Disk in his regulator. Lang claimed to have no recollection of what he experienced there however, much to Pym's disappointment.[1]

Rescue of Jemma Simmons

"After hearing about the Pym Technologies disaster, you even thought she'd been reduced to a microscopic level."
Phil Coulson to Leo Fitz[src]
Upon the disappearance of Jemma Simmons through the MonolithLeo Fitz briefly researched into the Quantum Realm, exploring the possibility that she was there.[2]

Meeting the Ancient One

Open Your Eyes 3

Stephen Strange passing through the Quantum Realm

When Stephen Strange came to Kamar-Taj, the Ancient One sent his consciousness through several dimensions and realities, including the Quantum Realm.[3]

Rescue of Janet van Dyne

Two years after the Clash of the Avengers, Lang received an apparent message from van Dyne in the form a shared memory of her daughter, which allowed Pym and Hope to confirm their suspicions about van Dyne being alive. They briefly opened a tunnel to the Quantum Realm, however, it was only able to be open for a few seconds. Later, when able to open a more stable tunnel, van Dyne, sending a message through Lang, gave her exact location, before revealing that there were only two hours before the Quantum Realm's instability would move her, causing her to disappear for another century.

Just before going through with the rescue, Hank Pym told Scott Lang and Hope van Dyne that he would be the one to enter the Quantum Realm, allowing Scott and Hope to distract Ghost away from the lab, in an effort to have an unproblematic rescue. With the battle for the laboratory ongoing, Hank entered the Quantum Realm with just about 15 minutes left before Janet's location would change. Upon arriving at Janet's location however, Hank becomes disoriented due to the Quantum Realm's nature, but Janet is able to find him and they reunite. They then come back with the lab returning to its original size.[4]

Trapped in the Quantum Realm

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Scott Lang trapped in the Quantum Realm

Though Janet van Dyne managed to help stabilize Ghost for the time being, they needed more quantum energy to fully heal her. To this end, Scott Lang was sent back into the Quantum Realm with a device to absorb quantum energy. However, while he was doing this task, Thanos used the Infinity Gauntlet to wipe out half the life in existence.[5] Coincidentally, Hank, Janet and Hope were among the victims, leaving no-one at the controls to bring him back to the normal world.[4]

Released from the Quantum Realm

Pronounced dead by society as his body was never recovered, Scott Lang remained trapped in the Quantum Realm as the truck was placed in a warehouse. For Lang's luck, however, a rat happened to sniff around the truck, accidentally setting the controls to bring him back, causing Lang to be shot from the truck to a bunch of garbage, bringing him back to reality. Five years had passed, but for Lang, it had only been five hours.[6]

Time Heist

The Quantum Realm was essential in the Avengers' plan to undo the Snap. Lang introduced the idea of going to the Quantum Realm to acquire past versions of the Infinity Stones, since in the present, the Stones were destroyed by Thanos. Bruce Banner initiated tests, sending Lang to the Realm and having him walk for an hour there, while in present time, Banner would get him out almost immediately. While the initial tests were unsuccessful, with Lang turning back into a kid, an old man, and a baby in the tests, the final test worked, as Lang was able to return in his correct age and appearance.

Meanwhile, Tony Stark managed to perfectly simulate a travel path by turning it into an inverted Möbius strip. He eventually brought the model he created to the New Avengers Facility in order to do a final test run. Clint Barton volunteered to the test run and was able to travel the Quantum Realm to land on a point where his family was still alive. The test was proved to be successful when Clint brought back a glove taken from the past.

Avengerstimetraveling

The Avengers travel through time

With the time travel mechanics now perfected, the team split up and traversed the Quantum Realm to different points in time: Steve Rogers, Iron Man, Hulk and Ant-Man set out to the Battle of New York in 2012 during the Chitauri Invasion, in order to get the Time Stone, the Tesseract and the Scepter; Nebula, War Machine, Black Widow and Hawkeye traveled to 2014 to get the Orb in Morag as well as the Soul Stone in Vormir; and Thor and Rocket Raccoon traveled to Asgard in 2013 to extract the Aether from Jane Foster during the Second Dark Elf Conflict.

Unfortunately, the Tesseract disappeared when Loki used it to escape. With few Pym Particles left, Tony and Steve traveled through the Quantum Realm again, this time, to 1970 in Camp Lehigh in order to steal the Tesseract from there and acquire more Pym Particles. 

The respective teams were ultimately successful in acquiring their respective Stones and traveled the Realm to present time; save for Natasha, who sacrificed herself in order to get the Soul Stone.[6]

Attack on the New Avengers Facility

Unbeknownst to them, the 2014 version of Nebula posed as her present self as she traveled to the Realm back to the New Avengers Facility. While the others were busy trying to undo Thanos' actions, she was able to infiltrate the facility and open a path for the past version of the Sanctuary II to travel to the present. Thanos' forces then launched an attack on the facility in order to acquire the Stones. The sheer size of the ship lead to the destruction of the Avengers' time travel machine, disabling access to the Quantum Realm.[6]

Battle of Earth

During the Battle of Earth, Hulk suggested the idea of returning the Infinity Stones in their respective timelines. While Stark reminded the team that the time travel device was destroyed, Scott revealed that Luis' Van was still intact to do just that. The heroes then tried to bring the Stones to the machine, but were unsuccessful as Thanos destroyed the device itself. This act lead to an incredible burst of Quantum energy.

Nevertheless, the heroes were victorious and saved the world. Hulk eventually built another time machine in order to return the Stones and Mjølnir to their respective times. Steve volunteered to do the task, and traveled the Quantum Realm to return the items to their respective places. However, instead of returning to 2023 as planned, he instead traveled far back to 1940, where he married Peggy Carter and lived a long, fulfilling life. Once Steve was an old man, he traveled back to the present timeline in order to declare Sam Wilson as his successor.[6]

Nature and Structure

This section requires expansion
"You never said how beautiful it was, Scott."
Hank Pym[src]

The Quantum Realm is said by Hank Pym to be a largely unexplored dimension, about which scientists currently know very little. Pym also says the concepts of time and space become irrelevant when entering the realm, and whoever tries to explore it may become trapped "for eternity"; it is even possible to travel through time without altering the future.

AM Quantum Realm 4

Scott Lang's incursion into the Quantum Realm began on a microscopic level, then entered atomic size, later dissolving into pure energy and waves, then in a fractal-like reality where the shrinking person meets an infinite number of mirror images of themselves, and ending in a weightless dark void with pockets of dim light.

The Quantum Realm is one of many universes in the Multiverse.[3]

Trivia

  • In the comics, the Quantum Realm is known as the Microverse,[7] which consists of many different dimensions all accessible through the same means as they are in the Marvel Cinematic Universe. Notably, the Microverse was also home to the Micronauts, a superhero team. Wasp was also trapped in the Microverse, during the time of her supposed death in Secret Invasion, before being discovered by Hank Pym.
  • The depiction of the Quantum Realm in Ant-Man is based on the former Disneyland attraction Adventure Thru Inner Space.

References

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The Marvel Cinematic Universe wiki has a collection of images and media related to Quantum Realm.

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