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An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists within the observable universe. [1] In astronomy , the terms object and body are often used interchangeably.
In Philolaus's system, these heavenly bodies, namely the earth and planets, revolved around a central point. This could not be called a Heliocentric "solar system", because in his concept, the central point that the earth and planets revolved around was not the sun, but the so-called Central Fire.
Selection of astronomical bodies and objects: Moon Mimas and Ida, an asteroid with its own moon, Dactyl; Comet Lovejoy and Jupiter, a giant gas planet; The Sun; Sirius A with Sirius B, a white dwarf; the Crab Nebula, a remnant supernova; A black hole (artist concept); Vela Pulsar, a rotating neutron star
These lists contain the Sun, the planets, dwarf planets, many of the larger small Solar System bodies (which includes the asteroids), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near-Earth objects.
The worship of heavenly bodies is the veneration of stars (individually or together as the night sky), the planets, or other astronomical objects as deities, or the association of deities with heavenly bodies. In anthropological literature these systems of practice may be referred to as astral cults.
The world (heavens) is spherical, as is the Earth, and the land and water make a single globe. The celestial bodies, including the Earth, have regular circular and everlasting movements. The Earth rotates on its axis and around the Sun. [5] Answers to why the ancients thought the Earth was central. The order of the planets around the Sun and ...
A wood carving from 1475, showing 7 celestial bodies. The 5 planets that can be seen with the naked eye, and the Sun and the Moon, each floating in a heavenly layer, the Arabic Felaq in ancient cosmology. In mythological or religious cosmology, the seven heavens refer to seven levels or divisions of the Heavens.
Beyond all of these heavenly bodies lies a sphere of fixed stars. [16] This sphere rotates about the stationary Earth, creating the perceived motion of the stars in the sky. [ 16 ] This system has an interesting feature in that the Sun and planets cannot be contained in solid orbs (their orbs would collide), but yet the stars are represented as ...