The Infinity Stones are elusive gems not just for Thanos, but for Marvel fans across the world. The colorful stones have been a major part of the Marvel Cinematic Universe for years, and they’ll be at the center of “Avengers: Infinity War” next year. That’s why it’s important for fans to realize that one of them was most likely moved in “Thor: Ragnarok.”

The Space Stone, most often called the Tesseract, is the blue cube that appeared in “Captain America: The First Avenger” and “The Avengers.” After Loki (Tom Hiddleston) attacked Earth in the latter, Thor (Chris Hemsworth) took Loki and the Infinity Stone back to Asgard and locked them up. While Loki was harder to contain, the Tesseract seemed safe and sound in Asgard’s vault — until the planet was about to be destroyed.

At the end of “Thor: Ragnarok” (consider this your SPOILER ALERT), Loki and Thor decide that the fire demon Surtur can destroy Hela (Cate Blanchett), and Loki heads down to the vault to get the horns that will bring the demon back to life. While there, he eyes the Tesseract, but the scene is cut off before viewers can see if he takes the Infinity Stone. Loki and Thor evacuate as many people as they can onto a spaceship and fly away from Asgard as they watch it blown to smithereens.

Infinity Stone The Tesseract was likely moved at the end of “Thor: Ragnarok.” Photo: Marvel Studios

The planet is destroyed, but the Tesseract probably didn’t go down with the planet. After all, the first post-credits scene in “Thor: Ragnarok” pretty much tells us that something highly valuable is on the refugee ship. After watching Asgard get destroyed, a huge ominous ship pulls up in front of Asgard’s vehicle. In case there was any doubt, Kevin Feige, head of Marvel Studios, confirmed that it’s Thanos’ (Josh Brolin) spacecraft.

“We call it the Sanctuary II,” Feige told TheWrap. The original Sanctuary is the planet that Thanos has been seen on in previous films. Marvel fans know that the purple alien is after the Infinity Stones, so he probably is visiting because knows that it’s onboard the Asgardian ship.

Between Thor, Loki, Valkyrie (Tessa Thompson), Hulk (Mark Ruffalo) and Heimdall (Idris Elba), the Tesseract has some worthy protectors, but Thanos might not be a match for this team of heroes. Fans will have to wait until “Avengers: Infinity War” to see what happens in the standoff.

The Time Stone was the last Infinity Stone introduced to the Marvel Cinematic Universe. It appeared in “Doctor Strange” and sits in Strange’s (Benedict Cumberbatch) Eye of Agamotto amulet. At the end of the movie, he placed it back on its pedestal in Kamar-Taj, which is located in Tibet.

Doctor Strange Doctor Strange (Benedict Cumberbatch) left the Time Stone in Tibet. Photo: Marvel Studios

The Reality Stone was also called the Aether in “Thor: The Dark World.” It’s the only Infinity Stone that often appears as a liquid. The 2013 movie ended with the stone being sent to Taneleer Tivan, The Collector (Benicio Del Toro). Asgard was already housing one Infinity Stone. Two would be dangerous. However, the Collector’s lair was blown up in “Guardians of the Galaxy,” so it isn’t clear if Taneleer still has the red object.

The Power Stone was the purple MacGuffin at the center of “Guardians of the Galaxy.” Also called the Orb, the Guardians left it with the Nova Corps on Xandar.

Infinity Stones The Power Stone was delivered to the Nova Corps by Star-Lord (Chris Pratt) in “Guardians of the Galaxy.” Photo: Marvel Studios

The Mind Stone was in Loki’s scepter when he tried to conquer Earth and get the Tesseract. Hydra used it to give Scarlet Witch (Elizabeth Olsen) and Quiksilver (Aaron Taylor-Johnson) their powers, and then Tony Stark (Robert Downey Jr.) and Bruce Banner used it to bring Vision (Paul Bettany) to life. It remains in Vision’s forehead.

Infinity Stones Vision is keeping the Mind Stone safe, but that could make him a target in “Avengers: Infinity War.” Photo: Marvel Studios

The Soul Stone’s location is unknown. It’s the only Infinity Stone that has yet to be introduced in the Marvel Cinematic Universe. With “Avengers: Inifinity War” coming out May 4, it seems like it’s possible that the heroes haven’t come across it because Thanos may already have it.