Which of the following is a contribution to astronomy made by Galileo?

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Galileo made all of these contributions to astronomy. He was the first to use the astronomical telescope to observe the Moon and discovered its surface features, including craters, mountains, valleys, and dark flat areas. He also observed Jupiter and its four largest moons, which provided evidence for the Copernican model of the solar system. Additionally, he noted the phases of Venus and showed that it goes through a cycle of phases similar to the Moon, indicating that it orbits the Sun rather than Earth. Galileo made all of these contributions to astronomy. He improved upon the design of the astronomical telescope, allowing for greater magnification and detail. Through observations of Jupiter, he discovered its four largest moons, which are now known as the Galilean moons. He was also the first to observe and document the features on the surface of the Moon, including its craters, mountains, valleys, and dark flat areas known as maria. Lastly, Galileo observed Venus and found that it exhibited phases like the Moon and appeared almost fully lit when it was on the far side of the Sun.

Which of the Following Is a Contribution to Astronomy Made