Which best explains how scientists confirmed that the moon formed around the same time as earth?

Genesis 1:14-19 says; And God said, "Let there be lights in the vault of the sky to separate the day from the night, and let them serve as signs to mark sacred times, and days and years, and let them be lights in the vault of the sky to give light on the earth," And it was so. God made two great lights - the greater light to govern the day and the lesser light to govern the night. (ect.)

You see, God made the Sun and the Moon on the fourth day of creation.