What did Galileo discover by using his telescope?

Answer The most important discovery of Galileo's cosmic observations was that Venus' rotation could only happen if the solar system orbited around the sun, not the earth. In addition, he saw that the moon... Read More »

Top Q&A For: What did Galileo discover by using his telescope

What year did Galileo make his first telescope?

Galileo Galilei made his first telescope in 1609, vastly improving the technology of other devices available in Europe. Galileo used his telescope to see the moon's craggy surface and discover sun... Read More »

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... Read More »

What did Galileo discover in 1610?

Galileo Galilei was a scientist who made significant contributions in astronomy, mathematics, physics and philosophy. On January 7, 1610, Galileo used the astronomical telescope that he invented to... Read More »

What did Galileo discover in astronomy?

Italian astronomer Galileo Galilei built himself a telescope based on the principles of a magnifying glass, and in 1609, he became the first person to view mountains and valleys on the moon. His as... Read More »