TheSkyX for Mac

From Software Bisque:

TheSky is an easy-to-use, full-featured, graphical astronomy program that turns your personal computer into a personal planetarium. Experience virtual observing with your computer. TheSky Astronomy Software brings to your desktop the wonder and fascination of viewing the heavens, whether you are tracing your first constellation, or hunting for yet-discovered celestial bodies. TheSky is as simple to use as it is powerful. Questions along the way? Our comprehensive user�??s manual and detailed on-line help will assist you in learning its many features. TheSky is available in three different "Levels" called Level II, Level III and Level IV. Levels II and III contain databases and features broad enough to keep most armchair astronomers satisfied for a lifetime. TheSky Level IV for Windows has even more data, more pictures and more capabilities.