What kind of telescope did Galileo turn skyward in 1610?
Galileo was an Italian mathematician and astronomer who used a refracting telescope to study the sky in 1610. Although he did not invent the telescope, he improved the design of an early telescope developed in the Netherlands.Refracting TelescopeGalileo’s first telescope was rudimentary, consisting of a tube with two lenses. Galileo’s next telescope was more powerful and capable of magnifying images nine times.How Galileo’s Telescope WorkedGalileo’s telescope used concave and objective lenses to refract light and bring objects into focus. He struggled to find properly fitting lenses for his telescope which limited his work.JupiterIn 1610, Galileo, using a refracted telescope, discovered four satellites surrounding Jupiter. In honor of the Grand Duke of Tuscany, he named the satellites the Medicean stars.MoonThrough his observations, Galileo found that the moon’s surface was rough and uneven, thus contradicting the belief that the moon’s surface was smooth. Italian mathematicians certif
