Various lensmakers in the very early 1600s fiddled with the idea, but it was : Hans Lippershey, Zacharius Janssen, and Jacob Metius who made a working telescope.
Sir Issac Newton
While not the inventor of the telescope, Galileo is widely believed to be the first person to use a telescope for astronomy.
Galileo perfected the telescope.
No, Galileo was not the first person to look through a telescope. The invention of the telescope is credited to Hans Lippershey, a Dutch eyeglass maker, around 1608. Galileo improved upon the design and used it to make groundbreaking astronomical discoveries.
The first person to look at the night sky with a telescope and record what he saw and try to make deductions from his observations was Galileo Galilei. Galileo had a difficult personality and he tried to assert that he was the only person allowed to make astronomical discoveries with a telescope, but, putting that aside, he was a serious scientist who made several important discoveries in physics.
The first person known to have looked at the heaves through a telescope was Galileo.
Galileo is the first person that we know of who pointed his telescope up. Or at least, he was the first person who wrote about doing so.
Galileo was the first person to use a telescope for astronomical research.
Venus is easily visible to the naked eye. People were looking at it for millennia before the telescope was invented. Galileo was the first person to look at Venus through a telescope.
Galileo
Galileo wasn't the first to make a telescope but he discovered the telescope at the age of 46.
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