Astronomy Softwareย 

Astronomy is a branch of science that deals with the study of celestial objects (including stars, planets, moons, comets, asteroids, meteor showers, nebulae, star clusters and galaxies) and other phenomena. ... Even with the unaided eye, there is much to study in the night sky ... So, letโ€™s explore some astronomy applications at hand for linux.ย 

KStars Desktop planetarium for KDE

Celestia Real-time space simulation

Stellarium A virtual planetarium

To space missions fan's here's the GMAT software. The General Mission Analysis Tool (GMAT) is a space trajectory optimization and mission analysis system developed by NASA and private industry in the spirit of the NASA Vision. GMAT contains new technology and is a testbed for future technology development.

To install GMAT on Fedora or to install GMAT on Ubuntu.