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
Galileo
Galileo
the telescope was shining it was painted a sky blue and decorated with fake diamonds and rubies
Galileo built the first telescope in 350BC. He used it to survey the night sky.
Galileo
He invented the telescope.
Terrestrial telescope
Galileo Galilei
Galileo was the first astronomer to use a telescope to observe celestial objects in detail. This helped him make groundbreaking discoveries such as the moons of Jupiter and the phases of Venus, which provided strong evidence for the heliocentric model of the solar system.
No, Neptune cannot be seen without a telescope. It is too dim and far away for the naked eye to detect, with a magnitude of about 7. It requires at least a small telescope or a strong pair of binoculars to observe it, along with knowledge of its location in the night sky.
Many people credit Galileo for inventor of the telescope. However it was a Dutchmen named Hans Lippershey who invented it in1608. He used the telescope as a spying glass and not to observe the night sky with it. Galileo often gets credit for inventing the telescope in 1609, which was 20x more powerful than Lippersheys, because he used it to observe the night sky.