fbpx Skip to main content

Galileo demonstrates his 1st telescope (1609)

Galileo demonstrates his 1st telescope (1609)

On this day in 1609 Galileo Galilei demonstrated his first telescope to Venetian lawmakers, including Leonardo Donato, the Doge (ruler) of Venice. A year after the demonstration, he published Starry Messenger, which described his finding – made with his new telescope – that Venus and the moons of Jupiter have phases, like the Moon.

 

Activity Ideas:

  • Take an Out of this World Moon Quiz – here
  • Get outside and do some star gazing if it’s dark enough – here
  • Or, do some cloud watching if you’d prefer daytime – here
  • Appreciate the “stars” in your setting – here
  • Find out more about Galileo’s telescope with this clip – here
  • Make delightful origami stars with our activity – here