Gravity is the tendency of masses to move toward each other.

The first mathematical formulation of the theory of gravitation was made by Sir Isaac Newton and proved astonishingly accurate. He postulated the force of "universal gravitational attraction".

Newton's theory has now been replaced by Albert Einstein's theory of general relativity but for most purposes dealing with weak gravitational fields (for example, sending rockets to the Moon or around the solar system) Newton's formulae are sufficiently accurate. For this reason Newton's law is often used.

Subcategories

There are 5 subcategories to this category.

B

• Black holes

C

• Celestial mechanics

G

• General relativity

Q

• Quantum gravity

S

• String theory

Articles in category "Gravity"

There are 30 articles in this category.

Gravity A Anti-gravity Aristotelian theory of gravity C Center of gravity D Dynamic theory of gravity F Falling Free-fall G Generalized theory of gravitation Gravitational binding energy Gravitational constant

G cont. Gravitational field Gravitational lens Gravitational radiation Gravitational redshift Graviton Gravity Probe A Gravity Probe B Gravity Research Foundation I Inverse-square law L Law of universal gravitation LeSage (gravity)

M Mach's principle P Pioneer anomaly Precession R Roche limit S Semiclassical gravity Speed of gravity Stochastic electrodynamics T Tidal force W Weightlessness