Ptolemy was the Roman astronomer who incorrectly argued that Earth was the center of the universe in his geocentric model. His theories dominated Western thought for over a thousand years.
The astronomer from Samos who claimed that the sun was the center of the universe was Aristarchus of Samos. He proposed this heliocentric model around the 3rd century BCE, but it was not widely accepted in his time.
The idea that the Earth was the center of the universe was adopted because of the writings of Ptolemy and Aristotle. This was a common belief until the 1700s.
The polished astronomer who suggested that the sun was the center of the universe was Nicolaus Copernicus. In his seminal work, "De revolutionibus orbium coelestium," published in 1543, he proposed the heliocentric model, which posited that the Earth and other planets revolve around the sun. This revolutionary idea laid the groundwork for modern astronomy and challenged the long-held geocentric view that placed the Earth at the center of the universe.
This was not one particular scientist - as far as we know. It was the generally accepted idea in antiquity. Perhaps the idea started from one particular scientist, but in that case, his name is probably lost.
Nicolaus Copernicus was the first astronomer to formulate a scientifically-based heliocentric cosmology that displaced the Earth from the center of the universe. So yes I guess you can say he was a scientist.
Ptolemy
Ptolemy
It wasn't a polish astronomer that suggested the earth was not the center of the universe.
Nicolus Copernicus
The Greek astronomer Claudius Ptolemy believed that Earth was at the center of the universe in his geocentric model, which was widely accepted in the ancient world. This view held sway until the heliocentric model proposed by Copernicus in the 16th century challenged it.
Nicolaus Copernicus, a Polish astronomer, proposed the heliocentric model in the 16th century, suggesting that the Sun is at the center of the universe with the Earth and other planets orbiting around it. This idea challenged the prevailing geocentric model, where Earth was considered the center of the universe.
That was the general belief held in antiquity.
Ptolemy was the Roman astronomer who incorrectly argued that Earth was the center of the universe in his geocentric model. His theories dominated Western thought for over a thousand years.
The astronomer from Samos who claimed that the sun was the center of the universe was Aristarchus of Samos. He proposed this heliocentric model around the 3rd century BCE, but it was not widely accepted in his time.
Copernicus was a polish astronomer that first formed the theory that the Earth was at the center of the universe.
Ptolemy.