Galileo’s telescope is exactly 400 years old today! On august 25, 1609, the Italian astronomer Galilei Galileo showed off his new invention — the telescope!
National Geographic News — Galileo’s telescope is today remembered as a revolutionary stargazing tool that changed Earth’s standing in the heavens.
Galileo’s telescope and astronomical observations also showed the surface of the moon wasn’t smooth, as was believed, and he was the first person to reveal that the Milky Way was composed of stars, Massey added.
Made of wood and leather, Galileo’s telescope had eight-times magnification of previous models originally developed in The Netherlands. Unlike the these devices, Galileo’s telescope had a convex main lens and a concave eyepiece that presented the image the right way up.
Uncategorized