PhotoPhoto of the Sun in hydrogen-alpha light. The giant planet Jupiter, whose large moons Galileo discovered with his "trouble-making" telescope, is more than 5 times farther from the Sun than ...

Near the beginning of the play, Galileo introduces his daughter to a telescope. "It's a miracle," she exclaims on looking ...

Galileo, using his telescope, invited scholars to observe the sunspots for themselves. They refused, convinced in advance that such imperfections could not exist. As one historian later remarked ...

I now wonder if Galileo had the same reaction when seeing Venus for the first time with his telescope. He was the first to note that this planet displayed phases like the moon. He also realized ...