Artemis II’s flightpath looks chaotic on paper—but it’s one of the most deliberate trajectories ever flown by humans. After launch, Orion doesn’t head straight to the Moon. It enters an eccentric Earth parking orbit, then executes a precisely timed Trans-Lunar Injection (TLI) that places it on a high-energy free-return trajectory. This path stretches far beyond the Moon, curves sharply around it, and then whips back toward Earth without requiring a major engine burn. Why the wild loop? Because Orion is flying through a multi-body gravity field. As it moves away from Earth, the Moon’s gravity begins to dominate, twisting the spacecraft’s velocity vector. Orion passes behind the Moon relative to its direction of travel, stealing orbital energy from the Earth–Moon system and naturally bending its path back home. This isn’t a simple ellipse—it’s a solution to the restricted three-body problem, where small timing changes produce massive geometric differences. The trajectory deliberately ...