Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.
Stellarium - Stellarium is a free open source planetarium for your computer.
Celestia - Real-time 3D visualization of space
KStars - KStars is a Desktop Planetarium for KDE.
SkyView - SkyView is powerful, easy-to-use app that answers questions about stars, constellations, and more.
Mitaka - Mitaka is software for visualizing the known Universe with up-to-date observational data and...