Summary in Seconds: Earth is quietly accompanied by a shifting cast of “not-Quite-moons”—quasi-moons, minimoons, and possible ghost moons—that reveal a far more dynamic neighborhood than we once imagined. Quasi-moons are asteroids that share Earth’s orbit around the Sun and appear to circle our planet for decades or centuries, while minimoons are small objects briefly captured by Earth’s gravity before drifting away or burning up in the atmosphere. Even more elusive are ghost moons, faint dust clouds that may form at stable gravitational points in space. Though none pose a current threat, these temporary companions offer valuable clues about the origins