Loaded with advanced features, this incredible software will turn your PC into a virtual planetarium! The Sun, Moon, the planets and their major moons are all displayed with surface features. This is v2, not moon-lite compatible.

FITS files are used in scientific applications like astronomy and medical imaging. It is also the first to implement the "eyepiece view," with deep sky objects plotted to scale and galaxies rotated to show position angle. PreviSat Satellite tracking software PreviSat is a satellite tracking software for observing purposes.

Our Rating: Dozens of free or inexpensive computer programs can aid your observing or simply allow you to explore the sky, with options available for Mac, PC, and Unix.