Galileo Demonstrates the Telescope

Galileo Demonstrates the Telescope



Galileo Galilei made a good discovery great. Upon hearing at age 40 that Dutch optician had invented a glass that made distant objects appearlarger, Galileo crafted his own telescope and turned it toward the sky Galileo quickly discovered that our Moon had craters, that Jupiter had its own moons, that the Sun has spots, and that Venus has phases like our Moon Galileo, who lived from 1564 to 1642, made many more discoveries. Galileoclaimed that his observations only made sense if all the planets revolvedaround the Sun, as championed by Aristarchus and Copernicus, not the Earth,as was commonly believed then. The powerful Inquisition mad Galileo publicly recant this conclusion, but today we know he was correct.