In the case of continuously distributed substance throughout the entire volume of space in the gravitational and electromagnetic fields, we shall use the Lagrangian function L, which in the covariant

theory of gravitation (CTG) has the form [3]:

Isaac Newton's 1687

theory of gravitation provides the basis for tidal theory: The earth and moon rotate around each other, with centrifugal force and gravitational attraction balancing one another.

Mach's principle and a relativistic

theory of gravitation.

From inspired guess to physical theory: finding a

theory of gravitation.

If so, dark energy would resemble the cosmological constant, which Albert Einstein conceived shortly after he developed his

theory of gravitation more than 90 years ago.

Surrounding the shadow should be a bright ring, arising from light that barely escapes the black hole's clutches and is bent by the monster's gravity, as predicted by Einstein's

theory of gravitation.

Even though one mass appears in the expression for Newton's escape velocity, it cannot be determined without recourse to a fundamental two-body gravitational interaction by means of Newton's

theory of gravitation.

According to Einstein's

theory of gravitation, the white dwarfs are spiraling toward each other because they're losing energy in the form of gravitational waves-invisible ripples in space-time that cause objects with mass to bob up and down.

We follow a Gedanken speculation of how Isaac Newton would have derived a law of gravitation if he had been aware of the modern classical tests for a

theory of gravitation.

Among these were the infrared Spitzer Space Telescope and Gravity Probe B, a mission to test Albert Einstein's

theory of gravitation.

General Relativity is the geometrical

theory of gravitation published by Albert Einstein in 1915/1916 [1-3].

Drop a book through a black hole's outer edge, known as the event horizon, and, according to Einstein's

theory of gravitation, it never gets out.