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it was almost universally believed that Earth was the center of the Universe and that all the "planets" circled Earth.
These would remain the only known planets until the invention of the telescope in early modern times.
The ancient Greeks initially did not attach as much significance to the planets as the Babylonians.
These were regarded by many early cultures as divine, or as emissaries of deities.
As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects.
The Pythagoreans, in the 6th and 5th centuries BC appear to have developed their own independent planetary theory, which consisted of the Earth, Sun, Moon, and planets revolving around a "Central Fire" at the center of the Universe.
Pythagoras or Parmenides is said to have been the first to identify the evening star (Hesperos) and morning star (Phosphoros) as one and the same (Aphrodite, Greek corresponding to Latin Venus).The term planet is ancient, with ties to history, astrology, science, mythology, and religion.Several planets in the Solar System can be seen with the naked eye.The concept has expanded to include worlds not only in the Solar System, but in hundreds of other extrasolar systems.The ambiguities inherent in defining planets have led to much scientific controversy.Get help creating prescreening questions, creating job offers, and more.Tags: Adult Dating, affair dating, sex dating