Gravity

See also: Graviton and graviton technology

Gravity, or gravitation, is a natural physical phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another. Gravity is the phenomenon that gives weight to physical objects and a planar property whose fundamental strength and behavior can vary across and within each plane.

In the Great Beyond

Gravity's behavior on each plane can vary based on location, localized natural and magical phenomena, physics-based interactions between objects, or completely at random.

In the Universe

For residents of Golarion and most other massive celestial bodies, gravity draws objects toward the object's center. This gives inhabitants a sense of up and down. The strength of this force is considered a baseline for those who travel between worlds of different mass; gravity on other worlds might make objects feel relatively heavier or lighter, or it might be absent and result in total weightlessness.

The gravitational attraction of the original gaseous matter present in the Universe caused it to begin coalescing, forming stars—and for the stars to group together into galaxies—so gravity is responsible for many of the plane's large-scale natural structures. Gravity has an infinite range, although its effects become increasingly weaker on farther objects. For instance, the Moon's gravity causes or influences ocean tides on Golarion.

On other planes

Planes might have different baseline gravitational strength from the Universe, including a complete lack of gravity. Localized gravity might also change in strength and directly, resulting in sensations of up and down changing dramatically. Gravity on certain planes might also act at unusual angles, for instance making the ground feel like an unending incline.

In planes with subjective directional gravity, individuals can define those directions for themselves, which allows them to effectively fly by controlling where and how they "fall" relative to their position.

Manipulation

Gravity can be manipulated by sufficiently powerful magic as well as through graviton technology.

Via magic

Spells, often from the transmutation school, can alter gravitational properties near a spellcaster, while other spells such as levitate and freedom of movement inherently violate gravity.

Via technology

Graviton technology creates localized gravitational phenomena. For example, a gravity rifle focuses gravitons into a beam that can alter gravity only for the objects struck by the beam, allowing its wielder to move or push heavy objects at will, and gravity clips attached to a weapon can make it strike with the apparent force of a much denser object.