The
Navigate and
Sense Direction activities enable characters to detect north, navigate complex paths, and plan a short journey. To plan an interstellar journey, characters instead
Plot Course. You can combine these checks with
Recalling Knowledge about the area—typically using
Nature or
Society—for the PCs to get their initial bearings or learn about important locations along their route. The DC for these checks is usually trained or expert but can be more challenging for unexplored or remote regions. Some of these locations might be useful, such as a transmission tower, a fruit tree, or a space station. Others might be mysterious or dangerous, such as an alien's hunting grounds, an asteroid, or an abandoned laboratory. It's best to point out two or three landmarks and let the group decide on their course from there.