too that the earth was not the fixed centre of a)an b)a c)the universe as Ptolemy had said.
and made other people a)to see b)see c)seeing
He saw a)by b)from c)with his own eyes
His a)observing b)observations c)observed and calculations confirmed that Copernicus and Kepler were right.
and four of a)the b)their c)its moons,the phases of Venus and spots on the sun
Galileo used mathematical calculayion as well as observation of nature ans was the first astronomer to use a telescope.With an instrument of his own a)experiment b)construction c)calculation, Galileo observed Jupiter