Galileo Galilei examined the night sky with a high powered telescope with sufficient resolving power for astronomical observation in Padua, Italy in 1609. He observed the moon was not smooth, but had sharp mountains, rugged craters, individual stars in the Milky Way, rings of Saturn, four moons or the Galilean satellites orbiting Jupiter, and wrote “stars in myriads which have never been seen before”. His findings were published in Siderius nuncius (The Starry Messenger).
- Galileo’s Observations of the Moon, Jupiter, Venus and the Sun …
At the time, most scientists believed that the Moon was a smooth sphere, but Galileo discovered that the Moon has mountains, pits, and other features, just like the Earth. When Galileo pointed his telescope at Jupiter, the largest planet in our solar system, he made a startling discovery.
- Galileo and the Telescope – Australia Telescope National Facility
The science of astronomy took a huge leap forward in the first decade of the 1600s with the invention of the optical telescope and its use to study the night sky. Galileo Galilei did not invent the telescope but was the first to use it systematically to observe celestial objects and record his discoveries.
- What is Galileo’s Telescope? – Universe Today
Jul 13, 2016 – And what he saw would forever revolutionize the field of astronomy, our … Galileo’s telescope was the prototype of the modern day refractor telescope. … but Galileo’s telescope remained the most powerful and accurately built …
- Galileo and the Telescope | Modeling the Cosmos | Articles and …
The story of Galileo’s telescopic observations illustrates how a tool for seeing and … The story of Galileo and the telescope is a powerful example of the key role that … sphere that learned Europeans thought of as a key feature of their universe.
- Galileo and his Telescope, the First Eyes to Look Deeply into Space …
Aug 25, 2017 – In 1990, humans placed in outer space the most accurate eye ever to gaze at the universe, the Hubble Space Telescope. But that would not have been possible without a less technological, but equally revolutionary, invention—the telescope presented by Galileo Galilei on August 25, 1609.