Hydrostatic equilibrium is the state in which a fluid's internal pressure gradient balances the gravitational forces acting upon it, maintaining a stable configuration. This principle is crucial in understanding the structure of stars, planets, and other astronomical bodies, where it ensures that they do not collapse under their own gravity or disperse into space.

Hydrostatic Equilibrium

Hydrostatic equilibrium

internal pressure gradient

Gravitational forces are the attractive forces between masses, which govern the motion of celestial bodies and the structure of the universe. They are described by Newton's law of universal gravitation and further refined by Einstein's general theory of relativity, which accounts for the curvature of spacetime around massive objects.

gravitational forces

A stable configuration occurs when a system reaches a state where its overall energy is minimized and it resists changes without outside influence. This condition often denotes equilibrium, meaning the system will remain in this state until external forces cause disturbances.

stable configuration

structure of stars

Structure of planets

astronomical bodies

collapse under their own gravity

disperse into space

Measuring the Sun's Diameter and Volume

The Birth of Stars from Nebulae

Principle of Pascal

Relevant Degrees

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