Venus's Observation

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History of Venus and its observation
Venus is the most characteristic star on the Earth's sky after the Moon and the Sun and its know by man since prehistoric times. One of the most ancient documents that mention Venus is on Arshurpanipal, the Babylonic library, and dates from 1600 BC. This document is a 21 years record of Venus appearance. The first babylonics called it Nindaranna. On the Mesopotamian city of Akkad this planet was the star of the mother-goddess Ishtar. Venus was considered as the most important of the celestial bodies by mayas, that called it "Chak ek", the Great Star. The ancient Greeks thought that the morning and evening appearances of Venus are two different bodies and called them "Hesperus" when it appeared in the western sky at sunset and "Phosporus" when when it appeared in the eastern sky at dawn. …show more content…
Galileo Galilei was the first person on doing it at December of 1610. That observation support the Heliocentric theory of Copernico. Galileo wrote about the different size of the diamentre of Venus on the different phases and said that when it was further to the Earth it was full and growning when it was nearer.
On rare occasions, Venus can be seen in the sky in the morning and in the afternoon the same day.This happens when in their maximum separation from the ecliptic while the bottom is in conjunction; then from one of the terrestrial hemispheres it can be seen in two moments. These events are repeated every eight years under the synodic cycle of the planet. One of this times was on the North hemysphere on 29th March
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