by using better stuff people if u don't know
the theory of how to make a telescope
Galileo Galilei
Galileo didn't invent anything he just helped improve the telescope.
galileo galilei and galileo are the same person (that doesn't make sense.)
Galileo Galilei is credited with inventing the telescope in the early 17th century, which he used to make significant astronomical discoveries. The thermometer was invented by Galileo's contemporary, but it is unclear who the exact inventor was because the concept of a scale measuring temperature had been developed by multiple scientists around the same time period.
Galileo Galilei was the first astronomer to make extensive use of the telescope for astronomy. He made several important discoveries, such as the moons of Jupiter and the phases of Venus, using his telescope in the early 17th century.
Probably Galileo Galilei (Astronomer and Physicist, 1564 -1642)
Galileo made his telescope in 1609, based on descriptions of instruments made in the Netherlands a year earlier. Despite what a depressingly large number of people would have you believe, he did not invent the telescope (though his was arguably an improvement upon the earlier ones).
Galileo Galilei . He only helped support the theory through his observations , he didn't invent the model, Copernicus did.
Galileo Galilei discovered phases in Venus -- pretty much proof of a heliocentric solar system -- in 1610 September.
Galileo Galilei did not invent the first telescope; it was invented by Dutch eyeglass maker Hans Lippershey in 1608. Galileo, however, heard about this invention and created his own improved version in 1609, which he used to make groundbreaking astronomical observations.
Galileo wasn't the first to make a telescope but he discovered the telescope at the age of 46.