Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go.

Stellarium key features:

  • Realistic simulation of the sky, sunrise and sunset
  • Default catalogue of over 600,000 stars
  • Downloadable additional catalogues for up to 210 million stars
  • Catalog data for all New General Catalogue (NGC) objects
  • Images of almost all Messier objects and the Milky Way
  • Artistic illustrations for all 88 modern constellations
  • More than a dozen different cultures with their constellations
  • Solar and lunar eclipse simulation
  • Photorealistic landscapes (more are available on the website)
  • Scripting support with ECMAScript (a few demo scripts are included)
  • Extendable with plug-ins: 8 plug-ins installed by default, including:
  • artificial satellites plug-in (updated from an on-line TLE database)
  • ocular simulation plug-in (shows how objects look like in a given ocular)
  • Solar System editor plug-in (imports comet and asteroid data from the MPC)
  • telescope control plug-in (Meade LX200 and Celestron NexStar compatible)

The major changes of this version:

  • We have finally completed our work on accurate planet axes, including Lunar libration
  • Visualisation of Earth shadow for Lunar eclipses
  • Better texture for the Lunar surface
  • Added the latest algorithms for planet magnitudes
  • Enhanced Calendars plugin
  • Replaced "arabic" by more accurate "al-Sufi" skyculture
  • Planets are now scalable and Solar glare switchable for didactic applications [full release notes]

Download: Stellarium 0.21.0 (32-bit) | 254.0 MB (Open Source)
Download: Stellarium 0.21.0 (64-bit) | 257.0 MB
View: Stellarium Home Page | Other Operating Systems