sternklar-Planetarium
EasySky
Distant Suns
MyStars
XEphem auch den meisten Linux CD's
RealSky
TheSky
StarryNight
Guide
Das GIOTTO-Projekt von Georg Dittie
Astronomical calculations
Astronomy and numerical software source codes
Astronomy C/C++ source code @ Project Pluto
Planetary Image Maps
Björn Jónsson's homepage: Planetary maps, ...
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