and harnessed the Tesseract's power to create the Light-Speed Engine to assist the Skrulls in their war against the Kree and took possession of the Tesseract, storing it in her laboratory in orbit. Mar-Vell, an undercover Kree scientist, joined P.E.G.A.S.U.S. Spending decades attempting to harness its power, Stark eventually helped found Project P.E.G.A.S.U.S., to whom he relinquished custody of the Tesseract in the 1980s. The Tesseract was then kept at Camp Lehigh in New Jersey, where it remained until at least 1970. Following Schmidt's defeat at the hands of Captain America in 1945, the Tesseract fell into Arctic waters, where it was recovered by Howard Stark. In 1942, the Tesseract was retrieved by Johann Schmidt, the leader of HYDRA, who used the Tesseract to power enhanced weaponry in order to defeat the Allies during World War II. Eventually, it was brought to Earth and left in Tønsberg, where it was guarded by devout Asgardian worshipers. It was used by various ancient civilizations before coming into Asgardian hands, kept inside Odin's Vault. The Tesseract, also called the Cube, was a crystalline cube-shaped containment vessel for the Space Stone, one of the six Infinity Stones that predate the universe and possess unlimited energy. 'Fabled to hold the power to rewrite the very laws of physics and unlock doors across the universe.' ― Johann Schmidt

Cosmic cube