Objects with mass have gravitational forces {gravitational pressure} on top, bottom, middle, and sides, all pointing toward mass center. See Figure 1.
Imagine that object is fluid. Gravitation pulls all points straight down toward mass center. Pull is directly proportional to mass m and inversely proportional to distance r squared: m / r^2. Pull is least at farthest points least and most at nearest points.
Volume reduction changes mass density and energy density, and so changes pressure. Gravity tends to reduce volume, and increase pressure, until outward pressure force per area balances inward gravitation force per area.
Physical Sciences>Physics>Relativity>General Relativity>Gravity
5-Physics-Relativity-General Relativity-Gravity
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Date Modified: 2022.0224