Explanation:
He subsequently used his newly invented telescope to discover four of the moons circling Jupiter, to study Saturn, to observe the phases of Venus, and to study sunspots on the Sun. Galileo's observations strengthened his belief in Copernicus' theory that Earth and all other planets revolve around the Sun.
During 1811 Amedeo Avogadro ‘s hypothesis that at the same pressure and temperature equal volumes of all gases carries equalnumbers of molecules. It also distinguished that the accurate interpretation in the reaction of hydrogen with oxygen to create water, he explained the reaction showing what happens on an atomic and molecular scale using the theory of Dalton.
