Galileo looked at the planet Jupiter and observed its 4 largest moons (which are still known as the Galilean moons, to this day).
Galileo used and made the first telescope.
Galileo created his first telescope in around two months in 1609. It was a refracting telescope with a convex objective lens and a concave eyepiece. This instrument revolutionized astronomy and allowed Galileo to make groundbreaking astronomical observations.
Galileo Galilei's first telescope was made in the city of Padua, Italy, where he was a professor at the University of Padua.
Galileo was probably the first scientist to use a telescope.Telescopes were invented about 1608 by spectacle makers in the Netherlands. Galileo used one for astronomy the following year.Galileo .
The telescope was first used by the Italian astronomer Galileo Galilei in 1609. Galileo made significant observations of celestial bodies such as the moon, Jupiter, and Venus using his telescope, which played a crucial role in revolutionizing our understanding of the universe.
I don't know who but I think a telescope. Galileo looked was first to look through the telescope.
The first person known to have looked at the heaves through a telescope was Galileo.
probably the moon
Galileo wasn't the first to make a telescope but he discovered the telescope at the age of 46.
Galileo Galilei first used the "new" telescope in 1609
Galileo perfected the telescope.
Galileo used and made the first telescope.
people think Galileo made telescope because he was the first one made up telescope
Galileo created his first telescope in around two months in 1609. It was a refracting telescope with a convex objective lens and a concave eyepiece. This instrument revolutionized astronomy and allowed Galileo to make groundbreaking astronomical observations.
after he made it
A telescope.
in his lifetime