My wife and I are currently in Italy, and I can’t express what it means to actually see some of the things I have been writing about. In one of my elementary science books, Science in the Scientific Revolution, I spend 8 lessons discussing Galileo Galilei, who lived from 1564 to 1642. He was the greatest natural philosopher (scientist) of his day, and he set the stage for Sir Isaac Newton, who would revolutionize the study of physics forever.
While he aided our understanding of many aspect of Creation, he is best known for his contributions to astronomy. Based on a friend’s description of a Danish “spyglass,” Galileo made a telescope and used it in his study of the heavens. He discovered sunspots, the four largest moons of Jupiter, mountains and valleys on the moon, and most importantly, the phases of Venus. The moons of Jupiter as well as the phases of Venus supported the idea championed by Copernicus – that the earth orbited the sun, which sat at the center of the universe.
In an effort to communicate these things to other natural philosophers, he wrote a book entitled Dialogue Concerning the Two Chief World Systems. Even though it was accepted by two different Roman Catholic censors (one in Rome and one in Florence), it was eventually used by certain members of the Roman Catholic church to put him on trial. The ruling based on the trial declared that Galileo was:
…vehemently suspected of heresy, namely, of having believed and held the doctrine – which is false and contrary to the sacred and divine Scriptures – that the Sun is the center of the world and does not move from east to west and that the Earth moves and is not the center of the world…
As punishment, he was placed under house arrest for the remainder of his life.
(If you want a more detailed discussion of this saga, I have one here.)