Yes he did, using the newly invented telescope.
He observed them around the year 1609.
many craters, mountains, and what Galileo referred to as 'seas'.
Well, Some of the astronomical things that he observed are: the phases of Venus. the craters on the Moon .Jupiter's orbiting moons
Duh, man built a telescope and looked into it.
He found that the Earth moves around that sun. The surface of the moon seemed pitted with craters. and the third one I don't know. Hope the other two help! :)
Galileo Gallilae
He observed them around the year 1609.
Galileo Galilei found that there were spots on the sun and craters on the moon.
many craters, mountains, and what Galileo referred to as 'seas'.
Galileo discovered craters on the moon so therefor technically he discovered craters.
Galileo Galilei.
the moon. if u don't believe me, check. if I'm wrong, do u think i care?
Well, Some of the astronomical things that he observed are: the phases of Venus. the craters on the Moon .Jupiter's orbiting moons
Galileo discovered the sun is the center of the solar system, he improved the telescope, he proved that the moon has craters on it, he claimed Venus has phases, and he observed sun spots on the sun.
Galileo Galilei
he discovered that there were craters on the moon
The Physicist, Galileo Galilei.