The Infinity Stones are the ultimate sources of power in the Marvel Universe, ancient and powerful relics that can be used as devastating weapons. Each of them is attached to one facet of creation: Space, Time, Power, the Mind, the Soul and Reality. Separately, they are incredibly dangerous. United, a thousand times more, to the point that the person who would wield them all simultaneously could reach something akin to godhood -- something that the Mad Titan, Thanos, was able to achieve in the comics, at one time becoming the most powerful character in the Universe.

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While there were a few teases and seeds planted throughout the Marvel Cinematic Universe's Phase 1 of movies, it woulnd't be until Thor: The Dark World that we would get an official confirmation that the Infinity Stones truly existed in this world. With each new MCU movie, we get closer and closer to Thanos -- who has made his presence known in Guardians of the Galaxy and both Avengers movies -- assembling his famed Infinity Gauntlet, the weapon that will allow him to destroy anyone who stands against him and rule over everyone.

After the release of Thor: Ragnarok, there is now only one movie left, Black Panther, before Avengers: Infinity War is upon us, before Thanos arrives to lay waste to planet Earth and before the Avengers and the Guardians of the Galaxy team-up to try and find a way to stop him. As the inevitable approaches, we go back through all 17 MCU movies released to date to pinpoint and remind you the exact, current location of each Infinity Stone.

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The Space Stone

The Space Stone was the first Infinity Stone to appear in the MCU -- and we didn't even know what it was back then. In fact, it was diguised as the Tesseract, a cosmic source of power and doorway to the other side of the galaxy that was at the center of both Captain America: The First Avenger and The Avengers. It was used by Loki to allow his army to attack New York, and it was finally reclaimed by Thor, who took it back to Asgard for safekeeping. However, we saw the Tesseract make a return very recently, in Thor: Ragnarok.

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When Loki enters Odin's treasure room to release Surtur, he walks by his old acquaintance -- something that makes him hesitate, for a simple instant, confirming that the Tesseract is still well and truly in the care of the Asgardians. However, once freed, the fiery demon Surtur proceeds to lay waste to Asgard, effectively destroying it to smithereens. So then, what happened to the Tesseract, and the Space Stone it contained? Either it's currently floating in space right now, to be picked up by any passerby or scavenger or, the more likely option, Loki did not stop at simply being tempted to reunite with the Tesseract. The God of Mischief could have easily taken it back, and it just might prove useful if and when the time comes to fight whoever or whatever is in the gigantic spaceship that hovered over Asgard's survivors in the mid-credits scene of Ragnarok.

The Power Stone

The Power Stone was at the center of the action in the first Guardians of the Galaxy film. Through it, we learned a great deal about what these stones were, and how ancient they were thanks to the arrival of the Collector. Although he attempted to purchase it from the Guardians, it nonetheless found its way in the hands of Ronan The Accuser, who attempted to use its raw power to annihilate Xandar, the home planet of the Nova Corps.

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But after the Guardians managed to save the planet (and keep it out of unsafe hands) they delivered it back to the Nova Corps, who are keeping it carefully locked away and protected on their home planet.

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The Mind Stone

The Mind Stone is one that was hiding under our noses for quite a long while. In fact, we saw it in action in the first Avengers movie in the form of the blue gem powering Loki's scepter, although we didn't know its true nature at the time. It would only be in Avengers: Age of Ultron that we would come to learn that the blue gem was simply a case housing the yellow Infinity Stone. The sentient robot Ultron then used this Stone to bring life to the android that would be known as the Vision.

Ultron couldn't have foreseen the Vision developping a mind of his own, with opinions and values that greatly differed from his would-be master. The Vision used the Stone to destroy Ultron, and it currently remains in his forehead, giving the android his very own mind -- as well as the status of the most powerful Avenger on the team's roster.

The Reality Stone

The Reality Stone first surfaced in Thor: The Dark World in the form of the Aether, a red, weightless water-like weapon wielded by the Dark Elf Malekith who sought to use it to bring darkness to every known realm. When the villain was defeated by Thor, the Aether was contained, and delivered by Volstagg and the Lady Sif to the Collector.

Thor-The-Dark-World-Aether

The Collector seems to vy for possession of all Infinity Stones. While he sought to obtain a second one in the form of the Power Stone, his collection was instead left in ruins when his slave rebelled against her master. As far as we can tell, the Reality Stone still belongs to the Collector. Unless however, it was taken by someone else in the aftermath of the collection's destruction.

The Time Stone

The Time Stone was the latest Infinity Stone to surface. In Doctor Strange, we came to learn that there was a powerful magical relic inside Kamar-Taj known as the Eye of Agamotto, whose practice was strictly forbidden. But Stephen Strange, being the man that he is, couldn't stay away. He took the Eye for practice, and dire circumstances led to him harnessing this great power for himself. It turns out that the Eye of Agamotto is actually powered by the green Time Stone, which allows its user to manipulate time, forwards, backwards as well as in the form of loops.

Doctor-Strange-Eye-of-Agamotto

In Thor: Ragnarok, we saw that Doctor Strange still wore the Eye of Agamotto, indicating that he is more and more versed in the ways of this great power. As we head into Infinity War, this is one Stone we do know will come directly into play.

The Soul Stone

Out of all six Infinity Stones, there is only one we have yet to see come into play. No one has seen or heard it mentioned in the MCU, which does seem to indicate that there is a bit of mystery surrounding it. In fact, there are a few possibilities as to where it could be. Some have theorized that it has been hidden in Wakanda and that we might see it pop up in Black Panther, the final Marvel movie to be released before Infinity War. There are also some who believe that the Soul Stone might be the source of Heimdall's powers, the Asgardian gatekeeper who has the ability to see and hear every one -- or every soul -- in all the realms. But with Ragnarok offering no hints about this, it seems rather unlikely.

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It's therefore possible that Thanos is already in possession of the Soul Stone. Seeing as how his plan was to possess all six, entrusting Loki with one in the hopes of delivering him another, Thanos somehow found himself without any Stones in his care. It would then make sense for him to at least have one Stone in his possession as Infinity War begins. Then again, it just might be that the Soul Stone is being kept secret for a reason. Maybe it's on the other side of the galaxy, and maybe it's the key to everything good and bad. The object of the final race, the last obstacle between life, and death.