Cube root solution expressions involve the real cube root of a real number, while if all three solutions are real numbers then they may be expressed in terms of the complex cube root of a complex number. Quartic equations can also be solved in terms of cube roots and square roots. The calculation of cube roots can be to traced back to Babylonian mathematicians from as early as 1800 BCE. In the fourth century BCE Plato posed the problem of doubling the cube, which required a compass-and-straightedge construction of the edge of a cube with twice the volume of a given cube;
Cosmic Cube and restores the timeline to what it should have been. A Cube is also given to Guardians of the Galaxy member Star-Lord by time-traveling villain Kang the Conqueror to use against Adam Warlock's evil alter ego, the Magus. However, Magus altered perception to make it seem like the Cube's power was used up. Star-Lord used the Cube's last bit of energy for real by subduing the reborn Thanos, rendering it a "cosmic paperweight". Absorbing Man becomes capable of assimilating the abilities of a fraction of a Cube. He is stopped by criminal mastermind Norman Osborn, who uses a magical sword