Europa , the smallest of the Galilean moons, resembles a bluish-white billiard ball. It is covered by an ice-capped ocean believed to be hundreds of feet deep. If there is life anywhere else in the solar system, scientists feel Europa is currently the best bet. Observing the Moon Contrary to popular opinion, the full moon is not the best time to view Luna. Here, the shadows are greatest and therefore the topography is best accentuated.
Crater rims, for example, are especially sharp at the terminator.
If you think about it, the terminator creeps just a bit each night. And, it will cross the entire surface during the lunar month. So there is your nightly viewing target. All you need now is a mosaic of the Moon for reference. Some are spectacular while others are quite dull.