The earliest recorded heliocentric ("Sun-centered") model of the solar system is generally attributed to Aristarchus of Samos in the 3rd century BC although several philosophers and mystics of many traditions and cultures hypothesized this possibility before and after him. The idea itself is counterintuitive and the geocentric ("Earth centered"), or Ptolemaic view was favored by most astronomers until well into the 17th century.
It was Nicolaus Copernicus who first proposed a mathematical model of the solar system with the Sun at the center but his work was not widely known at its publishing and his model was not as accurate at predicting the locations of the planets as the (later proven incorrect) Ptolemaic model.
Galileo Galilei was an astronomer of the Copernican school who made important observations of the phases of Venus which proved conclusively that the Ptolemaic system was incorrect. Coupled with his discovery of moons orbiting Jupiter, the case against a geocentric universe was basically insurmountable.
Johannes Kepler, a contemporary of Galileo, created a mathematical model of a heliocentric solar system which could be used to make predictions of the locations of the planets with a high degree of accuracy that was missing from the Copernican model.
While there is no one father of modern astronomy, Copernicus, Galileo and Kepler are the most often referred to Renaissance astronomers who are responsible for the heliocentric model which represents an incredibly important, fundamental and undeniable shift in the way we all view the universe and our place within it.
In the 8th century, Ja'far al-Sadiq refuted the geocentric model of the universe common at the time, in which the Earth is not moving and the Sun, Moon and the planets are orbiting around it. He was the first to refute Ptolemy's theory of the sun having two movements, one going round the Earth in one year and the other going round the earth in 24 hours causing day and night. Al-Sadiq argued that if the Sun is moving round the Earth for one year, it cannot suddenly change its course and go round the Earth for one day. He suggested that this could be explained with a heliocentric theory in which the Earth rotates on its axis and around the Sun. Al-Sadiq also wrote a theory on how the universe is expanding and contracting. He also stated that every object in the universe is always in motion, including objects which appear to be inanimate.[5]
Al-Sadiq's student, Geber (Jabir ibn Hayyan), asked him the following question on the stars:"How does the movement of the stars keep them from falling?"[5]
Al-Sadiq replied:"Put a stone in a sling and swing it round your head. The stone will stay in the sling so long as you are rotating it. But as soon as you stop the rotation, the stone will fall down on the ground. In the same way the perpetual motion of stars keeps them from falling down."[5]
Historically, it was the optical telescope. Modern radio telescopes, and cameras mounted on satellites, have advanced astronomy even further.
From what little I understand of your question I am guessing that the theory that is no longer accepted could be the Geocentric Model of the Universe. That is the theory that everything revovles aroung the Earth while the Earth is stationary.
Mesozoic, paleolithic, paleozoic, cretaceous
George II, duke of Saxe Meiningen
It should ask you if you want it turned down at the opening screen for the first time.
Copernicus was credited with being the first astronomer to create a scientific-based heliocentric cosmology that showed the Earth from the center of the universe. He was the starting point of modern astronomy. (From wikipedia)
Edwin Hubble.
Modern Astronomy is the astronomy in which we actually started looking at celestial bodies up close. Today there is a lot going on about the information of astronomy. Galileo was the first modern astronomer, just an interesting fact to throw in!
Nicolaus Copernicus is credited with opening the door to the era of modern astronomy with his heliocentric model of the universe, which placed the Sun at the center of the solar system, rather than the Earth. This groundbreaking theory revolutionized our understanding of the cosmos and laid the foundation for future discoveries in astronomy.
The foundations of modern Astronomy were laid by Ptolemy, a Greek astronomer and astrologer who lived in Egypt when it was ruled by Rome. Roman astrology was based on his work. Astrology was popular among the poor, and was disapproved by the educated elites.
Nicolaus Copernicus is the Polish astronomer who proposed the heliocentric model of the solar system, in which the Sun, rather than the Earth, is at the center. His work revolutionized our understanding of the cosmos and laid the foundation for modern astronomy.
Nicolaus Copernicus was the astronomer who first proposed the heliocentric model of the solar system, where the Earth and other planets revolve around the Sun. His work "On the Revolutions of the Celestial Spheres" laid the foundation for modern astronomy.
Some notable scientists in the 1600s were Galileo Galilei, Johannes Kepler, and Robert Boyle. Galileo was an Italian astronomer and physicist known for his contributions to modern observational astronomy. Kepler was a German astronomer who formulated the laws of planetary motion. Boyle was an Anglo-Irish natural philosopher who is considered one of the founders of modern chemistry.
The heliocentric theory was devised by Nicolaus Copernicus, a Polish mathematician and astronomer who proposed that the Sun, not the Earth, was the center of the universe. His work laid the foundation for the Copernican Revolution and modern astronomy.
Nicolaus Copernicus was the sixteenth-century astronomer who proposed the heliocentric model of the solar system, demonstrating that the Earth orbits the Sun. His book "De Revolutionibus Orbium Coelestium" laid the foundation for modern astronomy.
Modern astronomy.
Claudius Ptolemy, a Greek astronomer, is credited with naming 48 of the 88 modern constellations in his work called the Almagest, which was written around the 2nd century.