One of the major contributions of Galileo to the development of modern astronomy was to
A) discover the satellites (moons)of Jupiter.
B) prove that planetary orbits were ellipses.
C) use parallax to prove that Earth moved around the Sun.
D) develop the first mathematical heliocentric model of the solar system.

Question

Quizplus · Accepted Answer

Galileo Galilei made a significant contribution to astronomy by discovering the four largest moons of Jupiter (Io, Europa, Ganymede, and Callisto) in 1610 using his telescope. This discovery provided strong support for the Copernican system, which posited that not everything orbits the Earth, challenging the prevailing geocentric model of the universe.

One of the Major Contributions of Galileo to the Development