Galileo Galilei
Galileo built the first telescope in 350BC. He used it to survey the night sky.
No, Galileo did not invent the telescope. According to Wikipedia "The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey" Galileo was the first person to turn the telescopes to the night sky and make some pretty contradictory observations.
Galileo did not invent the telescope. The Italian physicist and mathematician improved on an existing spyglass design to create a more powerful one: a refracting telescope that he then used to study the night sky.
Humans first found out about Mars by looking up at the night sky. At some times of the year, it is visible like Venus- you just need to know where to look. The telescope helped a lot to understand more.
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.
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.
It was hell of a night ;)
At the time, using a telescope to observe the night sky was a new and controversial idea. Many astronomers were skeptical of Galileo's findings and methods, preferring to rely on traditional instruments and observations. Additionally, telescopes were expensive and not widely available, which may have limited their adoption among fellow astronomers.
Yes. If you know where to look, you can evensee it without a telescope, day or night.
Galileo
Galileo
Galileo