Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun? Venus

Question

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

Venus has phases.
The orbits of the planets are elliptical
Earth’s rotation causes the Sun to rise in the sky.
The planets move faster when they orbit closer to the Sun.

GPT-5 mini · Answer

Venus has phases.

Galileo’s telescopic observations in 1610 showed that Venus goes through a full set of phases (crescent → gibbous → full), which is only consistent with Venus orbiting the Sun and thus supports the heliocentric model.

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

Venus has phases.
The orbits of the planets are elliptical
Earth’s rotation causes the Sun to rise in the sky.
The planets move faster when they orbit closer to the Sun.

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Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun? Venus has phases. The orbits of the planets are elliptical Earth’s rotation causes the Sun to rise in the sky. The planets move faster when they orbit closer to the Sun.

All Answers 1

Submit Your Answer

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun?

Venus has phases.
The orbits of the planets are elliptical
Earth’s rotation causes the Sun to rise in the sky.
The planets move faster when they orbit closer to the Sun.