**3.4 Icy moon gravity levels**

**Table 2** provides the gravity levels of the major moons. While Titan has a surface gravity level of 14% of Earth, the remaining moons have gravity levels of 1 × 10<sup>−</sup><sup>2</sup> Earth gravity or less. Such low gravity levels may make transportation, operations, and industrial processing on the moon's surfaces very challenging. On the other hand, the low gravity is helpful is reducing the delta-V needed to transport large masses to and from the moon's surface.
