Galileo first used a telescope to observe the sky.
a telescope
He was not the first astronomer; there were plenty before him going back to the Babylonians at least. Galileo, however, was the first to use a telescope.
Galileo was the first astronomer to describe surface features of the moon.
Galileo Galilei
Galileo Gailei is the first person credited with using the telescope for astronomical observations. He did not invent the telescope. He is the first to have seen moons going around Jupiter, the rings of Saturn (though he incorrectly identified them), and that the Moon had cliffs and craters.
Galileo Galilei (from italy)
He was not the first astronomer; there were plenty before him going back to the Babylonians at least. Galileo, however, was the first to use a telescope.
Galileo I am not so sure he was the first, but he is the most famous.
Galileo.
Galileo was the first astronomer to describe surface features of the moon.
Galileo Galilei first used a telescope to look at the stars in 1609.
Galileo.
Galileo
Galileo Galilei
Galileo Galilei
The Italian astronomer and physicist Galileo wrote the first scientific description of the moon
Galileo Gailei is the first person credited with using the telescope for astronomical observations. He did not invent the telescope. He is the first to have seen moons going around Jupiter, the rings of Saturn (though he incorrectly identified them), and that the Moon had cliffs and craters.
Galieo was the first astronomer to view Jupiter's moons through a telescope and proved the heliocentric model.