The Galilean moons are the moons of Jupiter discovered by Galileo Galilei (because they were visible with the low-power telescope he invented). They were first observed by Galileo on January 7, 1610. In order from closest to Jupiter to farthest away, they are:
... century, the population grew to 673,100 today, 83% from whom are Russians. The largest settlement on the island is Yuzhno-Sakhalinsk[?] (pop. 171,000). A little coal is ...