400 Years of Galilean Moons

http://gishbar.blogspot.com/2010/01/io400-part-4-400-years-ago-today.html

Behold therefore, four stars reserved for your famous name, and those not belong to the common and less conspicuous multitude of fixed stars which, with different motions among themselves, together hold their paths and orbs with marvelous speed around the planet Jupiter, the most glorious of all the planets, as if they were his own children, while all the while with one accord they complete all together mighty revolutions every twelve years around the center of the universe, that is, round the Sun.