Corrected the midpoint distance the PCs are in between the vessel and their ship/landing point (in case they landed it in a safe place on the asteroid) from 175m to 125m (=250/2).

Added suggestion for advanced Constitution (Running) test in case of successful detection of the dog (part 3).

Clarified the legal information on the beginning and at the end of the document. Now it states that "This is a nonprofit, independent, fan-made, unofficial adventure".