Right! The Earth will never reach the horizon. It will pretty much stay right where it is in the moon sky.
Remember, one side of the moon is always facing the Earth. Sure, there's day and night on the moon (because it rotates with respect to the sun), but no matter if it's day or night, if the Earth is visible in the moon sky, it will always be visible and move only slightly as the moon orbits the Earth.
That's it for Lunar Puzzlers. We hope you enjoyed exercising your common sense.
For more about blue moons, visit Sky and Telescope's Web site...
http://skyandtelescope.com/observing/objects/moon/article_127_1.asp
http://skyandtelescope.com/observing/objects/moon/article_377_1.asp
The site also includes information about lunar occultations...
http://skyandtelescope.com/observing/objects/occultations/article_93_1.asp
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