'Galileo's first discovery in 1609 was that the surface of this is not smooth, but pitted'
Moon
ASTRONOMERS: Galileos first discovery in 1609 was that the surface of this is not smooth, but pitted
Galileo's first discovery in 1609 was that the surface of this is not smooth, but pitted
Galileo's first discovery in 1609 was that the surface of this is not smooth, but pitted
ASTRONOMERS
Moon
ASTRONOMERS