USA HISTORY

Detailed explanation-1: -In astronomy, the geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with Earth at the center. Under most geocentric models, the Sun, Moon, stars, and planets all orbit Earth.

Detailed explanation-2: -geocentric model, any theory of the structure of the solar system (or the universe) in which Earth is assumed to be at the centre of it all.

Detailed explanation-3: -Assumptions of the geocentric model The Earth is the center of the universe and is stationary. The planets, sun and stars revolve around Earth. All motions in the sky should follow circular paths as objects are attached to spherical shells.

Detailed explanation-4: -An astronomer named Eudoxus created the first model of a geocentric universe around 380 B.C. Eudoxus designed his model of the universe as a series of cosmic spheres containing the stars, the sun, and the moon all built around the Earth at its center.

Detailed explanation-5: -This theory was challenged by the development of a scientific instrument called the telescope by Galileo Galilee in the 16th century. The geocentric theory was replaced by the heliocentric theory. According to this theory, the solar system has the Sun as the center of the solar system.