Stellarium recently released its new version Stellarium 0.10.3 that features plug-ins for predicting the positions of artificial satellites in Earth orbit, improved telescope control features, telescope eyepiece simulation (ocular) and more. Plug-ins can be enabled using the new plug-ins tab in the configuration dialog.
Other Features
sky
* default catalogue of over 600,000 stars
* extra catalogues with more than 210 million stars
* asterisms and illustrations of the constellations
* constellations for twelve different cultures
* images of nebulae (full Messier catalogue)
* realistic Milky Way
* very realistic atmosphere, sunrise and sunset
* the planets and their satellites
interface
* a powerful zoom
* time control
* multilingual interface
* fisheye projection for planetarium domes
* spheric mirror projection for your own low-cost dome
* all new graphical interface and extensive keyboard control
* telescope control
visualisation
* equatorial and azimuthal grids
* star twinkling
* shooting stars
* eclipse simulation
* skinnable landscapes, now with spheric panorama projection
customisability
* plugin system adding artifical satellites, ocular simulation, telescrope configuration and more
* add your own deep sky objects, landscapes, constellation images, scripts...
Stellarium is an open source software so it is available for free download.
Download Stellarium for Free
