Digging

Digging rate depends on the type of
soil, the digger’s Basic Lift (that is,
ST¥ST/5), and the quality of the tools
available.
A world’s gravity is measured in “Gs,” with 1G being
Earth-normal conditions. In comparison, Mars has
0.38G and the Moon has 0.17G.
Microgravity is extremely low gravity (e.g., that of an
asteroid or small moon) – for game purposes, anything
below 0.1G.
Zero gravity is weightlessness, or “free fall,” as found
in space and aboard any spacecraft not spinning, accel-
erating, or otherwise generating artificial gravity.
In higher or lower gravity, mass stays the same, but
weight changes.