The first Infinity Stone appeared in 2011's Captain America: The First Avenger, although no one knew it at the time. Back then, fans had no idea what Marvel's master plan was for the overarching plan of its cinematic universe, and before Earth's Mightiest Heroes would first come together on-screen in The Avengers, we weren't concerned with the looming threat of a Mad Titan, scouring the cosmos in search of gems of unimaginable power. As the tapestry of the Marvel Cinematic Universe expanded, we learned more and more about the Infinity Stones, through the next Avengers movie, Thor: The Dark World, Guardians of the Galaxy and Doctor Strange.
The Stones were slowly and methodically introduced in various movies, but now the battle for control of them is about to begin in Avengers: Infinity War. However, considering it's been seven years since the first gem came into play in a Marvel movie, you could be forgiven for not remembering every detail about the cosmic gems, and what each one can do. Here, we offer a refresher course on all things Infinity Stones, so that you can head into Avengers: Infinity War knowing everything you can about the objects of Thanos' desire.
The Space Stone
The Space Stone first appeared in possession of the Red Skull, though even the nazi supervillain had no idea about the artifact's true power. The Skull used the Tesseract (aka the Cosmic Cube), to give him an advantage in Germany's attempt to win World War II. With the help of Arnim Zola, the Skull was able to siphon off the sizzling energy of the cube to power weapons and engines of war. However the true potential of the Cube would later be revealed, when we would learn that it was able to open a doorway to the other side of the universe, a power Loki used to bring an alien army to Earth in 2012's The Avengers.
Once mastered, the Infinity Stone will give its wielder the power to teleport anywhere in the universe, from Earth to Saturn's moon Titan, and back again. from one corner of the universe to the other. Simply put, once Thanos gets his hands on the Space Stone, there won't be a planet out of his reach.