SOLAR SYSTEM

Detailed explanation-1: -Galileo Galilei’s observations that Venus appeared in phases–similar to those of Earth’s Moon–in our sky was evidence that Venus orbited the sun and contributed to the downfall of the centuries-old belief that the sun and planets revolved around Earth. Also sketched here are Jupiter, Saturn and Mars.

Detailed explanation-2: -The discoveries that Galileo made using his telescopes helped to prove that Sun was the centre of the Solar System and not the Earth. His observations strongly supported a Sun-centred model known as the Heliocentric model, previously suggested by astronomers like Nicolaus Copernicus.

Detailed explanation-3: -Galileo used his telescope to show that Venus went through a complete set of phases, just like the Moon. This observation was among the most important in human history, for it provided the first conclusive observational proof that was consistent with the Copernican system but not the Ptolemaic system.

Detailed explanation-4: -In 1610 Galileo Galilei observed with his telescope that Venus showed phases, despite remaining near the Sun in Earth’s sky (first image).

Detailed explanation-5: -He soon realized that Venus, like the moon, was changing phases. Venus experienced peroids equivalent to a full moon, new moon, and all the stages in between. For Galileo, this was proof that the earth must revolve, along with the other planets, around the sun.

Detailed explanation-6: -Tip #4: What to look for while observing Venus Venus goes through phases just like our own Moon as it orbits around the Sun. Its phases are easily visible through a telescope with moderate magnification as it waxes or wanes.