Stellarium is a free open source planetarium Software for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
Features
- default catalogue of over 600,000 stars
- extra catalogues with more than 210 million stars
- realistic Milky Way
- Drawing of the 88 constellations with their names
- Drawing of more than 40 messiers objects (Orion, M31 etc..)
- very realistic atmosphere, sunrise and sunset
- the planets and their satellites
- a powerful zoom, time control
- telescope control
- eclipse simulation
How to Install Stellarium in Ubuntu / Debian Linux
Open a terminal
$ sudo apt-get install Stellarium
Or Use Synaptic Package Manager 
