Question

What four discoveries did Galileo make that showed planets are physical bodies like the Earth and not "wandering stars?" A) The discovery of gravity, the discovery of the heliocentric model, the discovery of the Big Bang theory, and the discovery of black holes.

B) The discovery of the law of conservation of energy, the discovery of the law of motion, the discovery of the law of reflection, and the discovery of the law of refraction.
C) The discovery of the phases of Venus, the discovery of the moons of Jupiter, the discovery of the mountains on the Moon, and the discovery of the sunspots.
D) The discovery of the law of universal gravitation, the discovery of the law of electromagnetic induction, the discovery of the law of thermodynamics, and the discovery of the law of quantum mechanics.

Answer 1

Galileo made four discoveries that showed planets are physical bodies like the Earth and not "wandering stars."

Step-by-step explanation:

Galileo made four discoveries that showed planets are physical bodies like the Earth and not "wandering stars." These discoveries are:

1. The discovery of the phases of Venus, which showed that Venus goes through phases like the Moon and must revolve around the Sun.
2. The discovery of the moons of Jupiter, which demonstrated that there can be centers of motion that are in motion.
3. The discovery of the mountains on the Moon, which provided evidence that the Moon is a physical body with features similar to Earth.
4. The discovery of sunspots, which showed that the Sun is not a perfect, unchanging celestial object.