Building a Simple Refracting Telescope | AMNH https://www.amnh.org/learn-teach/curriculum-collections/discovering-the-universe/building-a-simple-refracting-telescope
What could Galileo see when he looked through his telescope? Build a refracting telescope with lenses similar to the ones he used, and see for yourself.
Rainier Retrieving a Stromatolite from the Sahara