What did Galileo support?

What did Galileo support?

• A. Heliocentrism
• B. Geocentrism
• C. Ptolemaic model
• D. Tidal theory

Answer: (A)

Galileo supported heliocentrism—the idea that the Sun is at the center of the solar system and that Earth and the other planets orbit it. He built a persuasive case through new observations with a telescope. The phases of Venus show that Venus goes through a full set of shapes only possible if Venus orbits the Sun, not Earth. The moons of Jupiter demonstrate that not everything revolves around Earth, proving there are bodies in the universe that don’t orbit our planet. He also observed sunspots and the Moon’s rough surface, which challenged the belief in perfect, unchanging celestial spheres centered on Earth. Taken together, these findings pushed the view toward a Sun-centered system, even though it faced strong opposition at the time. The other options point to Earth-centered theories or unrelated ideas, which don’t fit Galileo’s supported view.

Galileo supported heliocentrism—the idea that the Sun is at the center of the solar system and that Earth and the other planets orbit it. He built a persuasive case through new observations with a telescope. The phases of Venus show that Venus goes through a full set of shapes only possible if Venus orbits the Sun, not Earth. The moons of Jupiter demonstrate that not everything revolves around Earth, proving there are bodies in the universe that don’t orbit our planet. He also observed sunspots and the Moon’s rough surface, which challenged the belief in perfect, unchanging celestial spheres centered on Earth. Taken together, these findings pushed the view toward a Sun-centered system, even though it faced strong opposition at the time. The other options point to Earth-centered theories or unrelated ideas, which don’t fit Galileo’s supported view.