Celestia
4.0 kati ya nyota 5 (kulingana na hakiki 1)
Celestia – real-time 3D visualization of space The free space simulation that lets you explore
Lebo: space simulation
Saraka isiyo na Biashara
wale ambao hutoa, hawapaswi kuuliza chochote kwa malipo
wale wanaopokea, hawapaswi kulipa chochote