Stellarium

Stellarium
Name	Stellarium
Developer	Gabriel Painchaud, Fabien Chéreau, Linux community
Initial release	2001
Latest release	0.23.x
Programming language	C++, OpenGL
Operating system	Linux, Windows, macOS, Android, iOS
License	GNU GPLv2

Stellarium is a free, open-source planetarium application that renders realistic skies in real time for users ranging from amateur astronomers to professional educators. It simulates celestial objects including stars, planets, nebulae, and constellations with photorealistic landscapes, and supports telescope control and plugin extensibility. The project combines graphical libraries and astronomical catalogs to provide interactive visualization for public outreach, research planning, and classroom instruction.

Overview

Stellarium presents a virtual sky using astronomical catalogs such as the Hipparcos, Tycho, and UCAC catalogs, alongside meshes and textures for objects like the Moon, Mars, and the International Space Station. It integrates libraries and standards including OpenGL, Mesa, and FITS while interoperating with devices and protocols such as ASCOM, INDI, and the Portable Network Graphics format. The interface offers coordinate systems (equatorial, ecliptic, horizontal), time controls synchronized with UTC, and features for simulating phenomena observed at observatories like Mauna Kea, Paranal, and Mount Wilson.

History and development

Development began in the early 2000s by contributors with roots in the Debian and GNOME communities and expanded through collaborations with developers in the KDE, Fedora, and Ubuntu ecosystems. Early releases incorporated data from projects such as the Hipparcos mission and the Hubble Space Telescope archive; later milestones added support for catalogs like Gaia and surveys from the Sloan Digital Sky Survey. Key contributors and maintainers have included individuals from open-source foundations and organizations that support science outreach, while funding and sponsorship have come via grants, crowdfunding, and collaborations with planetariums and museums.

Features and capabilities

Stellarium offers rendering of stellar atmospheres, planetary surfaces, deep-sky objects from Messier and NGC catalogs, realistic atmospheric extinction, and simulation of solar system dynamics including perturbations used by JPL ephemerides. It supports scripting, plugin modules for telescope control, and export formats compatible with software such as Cartes du Ciel and Celestia. Visualization features emulate phenomena studied at institutions like the Royal Observatory, Greenwich, the Smithsonian Astrophysical Observatory, and the European Southern Observatory, while input/output mechanisms allow integration with hardware developed by vendors that support ASCOM or INDI drivers.

Platforms and distribution

Stellarium is packaged for major distributions and stores including Debian, Ubuntu, Fedora, Arch Linux, and openSUSE, and is available on Microsoft Windows, Apple macOS, Android via Google Play, and Apple iOS via the App Store. Source code is hosted on repositories that use Git and GitHub workflows, and binary builds are distributed through project pages associated with free software foundations. Localization and packaging efforts have involved communities around KDE, GNOME, LXDE, and language teams aligned with the Unicode Consortium.

Reception and usage

Reviews in publications and organizations such as Sky & Telescope, Astronomy Magazine, Scientific American, and NASA outreach teams have highlighted its accuracy and accessibility. Planetariums, science centers, university departments at institutions like Harvard, Caltech, MIT, and Oxford have adopted it for demonstrations and public shows, and amateur societies including the Royal Astronomical Society, Astronomical Society of the Pacific, and local astronomy clubs use it for planning observations. Awards and recognitions have included community-driven accolades from open-source events and mentions at conferences such as PyCon, FOSDEM, and the International Planetarium Society meetings.

Educational and research applications

Educators in classrooms influenced by curricula from the National Science Teachers Association, UNESCO outreach programs, and museum education departments employ Stellarium for lessons on celestial mechanics, phases of the Moon, and coordinate transformations used in astrometry. Researchers use it for observation planning in conjunction with facilities like the Very Large Telescope, Keck Observatory, Arecibo Observatory archival studies, and instrument teams at institutions such as the Jet Propulsion Laboratory and Space Telescope Science Institute. Its extensibility enables development of modules for citizen science projects coordinated with organizations like Zooniverse and data pipelines tied to missions including Gaia and the Hubble Space Telescope.

Category:Free astronomy software Category:Open-source software Category:Planetarium software