In 1610, Galileo used the telescope to discover four moons revolving around Jupiter.The motion of these moons proved that not everything in the sky revolves around Earth.
Galileo's observation of Venus also supported the heliocentric system. Galileo knew that Venus is always seen near the sun. He discovered that Venus goes through a series of phases similar to those of Earth's moon.
Galileo observed that the four moons of Jupiter were revolving around Jupiter not the earth. This disproved the geocentric theory that states that everything has to revolve around the earth. He also saw observed the the moo s were smaller objexts revolving around a much larger object. This was a requirement for the heliocentric thoery.
The two most significant observations were the moons around Jupiter and the phases of Venus.
The moons of Jupiter proved that objects can orbit around other celestial objects. This was totally against aristotle's geocentric theory where every object in the universe orbits the Earth.
The phases of Venus was the final proof of a heliocentric theory. There could be no other explination that could explain this observation.
1. Galileo found dark spots on the moons surface that he hadn't examined in that spot before in his earlier research.
2. Galileo used the telescope to discover four moons revolving around Jupiter.The motion of these moons proved that not everything in the sky revolves around Earth.
3.Galileo's observation of Venus also supported the heliocentric system. Galileo knew that Venus is always seen near the sun. He discovered that Venus goes through a series of phases similar to those of Earth's moon (but the geocentric system also predicts the phases of Venus).
Galileo discovered two important things: the moons of Jupiter and the phases of venus.
Both discoveries raised doubts about the old Ptolemaic system which was geocentric, and the phases of Venus showed that it was definitely wrong. But neither discovery proved that Copernicus's theory - supported by Galileo - was right.
This is because Tycho's geocentric system explained the phases of Venus satisfactorily.
he is very cool
I suspect the answer you're looking for is Galileo Galilei. It just has two problems: Galileo didn't "invent the telescope", nor did he "develop a heliocentric view of the universe." The telescope was invented in the Netherlands; Galileo simply improved on it and was probably the first to apply it to astronomical observations instead of just looking for distant ships. Also, Copernicus is (properly) credited with the heliocentric view; Galileo's observations supported this, but he didn't come up with it.
Galileo
Galileo
By looking into space with the telescope.
One could not simply point a telescope at the sky and find planets. Galileo calculated the positions of various planets at different times of the year. His observations led him to adopt the heliocentric theories of Copernicus.
Galileo's observations with his telescope supported the concept of heliocentricism. He noted that the satellites of Jupiter and Venus, based on their range of phases, did not match geocentricism supported by Ptolemy. He noted that based on these findings, that the Heliocentric theory was correct.
I suspect the answer you're looking for is Galileo Galilei. It just has two problems: Galileo didn't "invent the telescope", nor did he "develop a heliocentric view of the universe." The telescope was invented in the Netherlands; Galileo simply improved on it and was probably the first to apply it to astronomical observations instead of just looking for distant ships. Also, Copernicus is (properly) credited with the heliocentric view; Galileo's observations supported this, but he didn't come up with it.
Galileo
Galileo
By looking into space with the telescope.
Galileo Galilei . He only helped support the theory through his observations , he didn't invent the model, Copernicus did.
The popular answer to this question would be Galileo. However, contrary to popular belief Galileo did not invent the telescope. He built his own telescope about a year after their initial creation and later made significant improvements.
In 1610, Galileo used the telescope to discover four moons revolving around Jupiter.The motion of these moons proved that not everything in the sky revolves around Earth.Galileo's observation of Venus also supported the heliocentric system. Galileo knew that Venus is always seen near the sun. He discovered that Venus goes through a series of phases similar to those of Earth's moon.
Galileo
Copernicus proposed the theory of a heliocentric model while Galileo improved the telescope, studied Jupiter's moons, and supported the heliocentric model
Galileo
Why, the telescope, of course! Using his telescope, Galileo was able to make observations of the heavens in a way no one else was able to before.