Galileo Galilee
Copernicus did not use a telescope in his astronomical work.
Copernicus did not use a telescope in his astronomical work, and probably never owned one.
he invented the telescope
Nicolas Copernicus did not use a telescope, the use of the telescope to study the solar system was not done until over 50 years later by Galileo.
no it is the Galileo one
copernicus invented the telescope
Copernicus is the first in modern times, but he may have been basing his theory on the work of an earlier Greek Natural Philosopher. Galileo used a telescope and mathematics to prove Copernicus' hypothesis.
He looked through his telescope!
Because he didn't invent the Telescope so he saw it from his naked eye
Galileo Galilee
Nicolaus Copernicus published his seminal work, "De revolutionibus orbium coelestium," in 1543. Galileo Galilei began his astronomical observations with the telescope in 1609. Thus, approximately 66 years passed between Copernicus's publication and Galileo's study of planets using the telescope.
Galelei derived his theory from Copernicus. To Copernicus it was just a theory. Galilei managed to prove it when he invented the telescope and was able to see the moons orbiting Jupiter.