Up until the 17th century, the universe was thought to have only three bodies (Earth, Moon, Sun). True False

False! Up until the 17th century, while Earth, Moon, and Sun were certainly significant, many ancient astronomers recognized the presence of several other celestial bodies, such as planets like Mars, Jupiter, and Venus. They observed these heavenly wanderers for millennia, but it was really in the 17th century, with the birth of modern astronomy, that our understanding of the cosmos expanded significantly. With the advent of telescopes and the pioneering work of astronomers like Galileo and Kepler, the door swung wide open to explore the vastness of space. Their discoveries not only revealed more planets but also laid the groundwork for a heliocentric model that changed our view of the universe and our place within it. It's a cosmic revolution worth celebrating!