Do you mean that you have to come up with your own theory about some aspect of astronomy? That is wonderful! What is your thinking so far?
the big bang theory
Astronomy: Georges Lemaitre [See related question]TV Series: Chuck Lorre and Bill Prady
As one of the sciences astronomy is most closely related to mathematics, physics and chemistry.
Astronomy is the science of looking at the sky to see stars, planets and other things in space. As Jupiter is a planet that can be seen, it is related to Astronomy.
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.
No.
Precession is related to the Ice Age in the sense that it helps propagate and is line with the Ice Age's theory about astronomy, especially pertaining to the earth's orbital forces and the rotation of the earth's axis.
His theory of the planets came out in 1543.
Astronomy
Albert Einstein discovered the Theory of Relativity.
Stars Planets Black holes The Sun Nebulas The big bang theory and theorys related Galaxies Solar systems Moons Asteroids And much more
he developed a theory that the Sun was at the center of the solar system, not Earth