Though the voyage is not easy, it is known that a mariner who can find the Straight Road can sail beyond the edges of the world and reach the stars, islands of bright light studded into a silent, dark, astral sea, colder than the grave and vaster than imagination.
The first thing an astral sailor must know is that one may not sail to any star at any moment. The Straight Road leads away only to the West, and one may find it only when sun and moon set as one. The astronaut sets their course only by the star that rises opposite the setting of the Sun. They will know their course is true if the heavens cease to turn, their guide-star rising no higher than a beacon from an impossible shore.