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Archives of Nethys

Archives of Nethys

Pathfinder RPG (1st Edition) Pathfinder RPG (2nd Edition) Starfinder RPG

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GM Core / Chapter 2: Building Games / Building Worlds / Cosmology

Composition of Outer Space

Source GM Core pg. 141 2.0
The spaces between the stars can also affect the stories told in that world.

Vacuum: In conventional astronomy, outer space is an immense void existing in a near-perfect vacuum. In some settings—including the Age of Lost Omens, where it is known as the Dark Tapestry—the trackless firmament between the stars is an ominous expanse home only to terrible beings of incomprehensible malice.

Endless Sky: What if the blue sky overhead extended outward forever? One need only fly high enough and far enough to reach another world.

Celestial Spheres: The ancient Greeks posited that planets, stars, and more were embedded like jewels within celestial orbs of quintessence nested within one another.