The Infinity Gems are six powerful artifacts in the Marvel Comics universe, each representing a different aspect of existence. They are the Space Gem, Time Gem, Reality Gem, Power Gem, Mind Gem, and Soul Gem. When combined, they grant the wielder god-like abilities, allowing them to manipulate the universe at will. These gems are often associated with the character Thanos, who seeks to collect them to achieve ultimate power. The Infinity Gems have been central to various storylines, including the famous Infinity Gauntlet saga, where Thanos uses them to challenge the heroes of the Marvel universe.