Galileo’s watercolours of the various moon phases from 1609. Note how the terminator between the light and dark sides is not smooth – thus showing that the moon’s surface is also not smooth.
Moon Phases by Galileo Galilei
A Little More Web Kipple
Galileo’s watercolours of the various moon phases from 1609. Note how the terminator between the light and dark sides is not smooth – thus showing that the moon’s surface is also not smooth.