Question

what is the heliocentric theory? *
the idea that the earth is at the center of the universe
the belief that planets move in circular paths
the idea that the sun is at the center and planets move around it
the belief that planets do not move
what was galileo galilei’s contribution to astronomy? *
he created the heliocentric theory
he stated that planets move in circular paths
he used a telescope to find evidence supporting the heliocentric view
he discovered the law of gravity

Explanation:

The heliocentric theory posits the sun as the center of the solar - system with planets orbiting it. Galileo used a telescope to observe celestial bodies, providing evidence for the heliocentric view. For example, his observations of the phases of Venus could only be explained in the heliocentric model.

Answer:

1. The idea that the sun is at the center and planets move around it
2. He used a telescope to find evidence supporting the heliocentric view