Science - Astronomy

Science - Astronomy - Software

Hubble Space Telescope -- Wallpaper - [commercial - Win95/98/NT] Thirty full-screen Hubble photos for use as wallpaper and screen saver.
Computing planetary positions - a detailed online tutorial on how to compute planetary positions.
SAL - Physics & Astronomy Software - A collection of information and links by Scientific Applications on Linux (SAL).
Nightfall - [open source - Linux/Unix] Interactive program for computing synthetic lightcurves and generating animated views and best-fit models of eclipsing binary stars.
Linux for Astronomy cdrom - [commercial - Linux] The new release of Linux for Astronomy includes over 3Gb of Astronomical software precompiled for the Linux (x86) operating system. Applications include a wealth of general purpose image and signal processing tools, as well as the state-of-the-art algorithms in use at observatories and universities worldwide. Facilities for processing the data products of the major space-based instruments (Hubble Space Telescope, EUV, Einstein, ROSAT, IUE, etc) are also included.
LinuxAstro - Astronomical software on Linux.
Engineering, Science and Math Applications on Linux - A large indexed collection of pointers to Linux applications.
Astronomy-related software - A list of many astronomy-related programs.
Kairos General Calendar Conversion Program - [commercial, demo available -- Win95/98/NT] Includes calendars required by historians of astronomy and general historians. Many details are provided for Indian and Jewish calendars and much besides. There is also a display of positions of the Sun, Moon and planets, effectively replacing Tuckerman's tables. A horoscope display, and details of lunar visibility, are calculated from modern parameters.
Computing planetary positions - a tutorial with worked examples.
EVCODE - A stellar evolution simulator designed for astronomy education.
AstroTips - Astronomy Freeware and Shareware - Information on selected astronomy free software. Read a comment, see a screenshot and download.
Ksetiwatch - a monitoring tool and work unit manager for SETI@home - Ksetiwatch monitors multiple SETI@home clients and automatically logs and manages completed work units.
GeoClock - [shareware MS-W] Sunlight clock with world times and sun and moon positions and coverage.
16-bit Astronomy Software - [shareware/freeware - DOS/Windows] A site archiving a range of astronomy shareware and freeware for DOS and Windows 3.1.
Approximate Astronomical Positions - Astronomical calculations including coordinate conversion, position and circumstances of the Moon, and positions of the planets. Designed for programmable calculators, spreadsheets and illustrative applications where high accuracy is not needed.
Cartes du Ciel / Sky Charts - This freeware allows you to draw sky charts according to the data of 15 catalogs of stars and nebulae, as well as the position of planets, asteroids, and comets. The software is available in English and is translated in 8 other languages.
Deepsky 2000 - [commercial - Windows] Observation planning software for astronomers. Includes telescope control, logging, and charting.
Astronomy Common Object Model (ASCOM) - Promoting the use of open scriptable tools for amateur and educational astronomy.
RISC OS astronomy software links - [commercial & freeware - RISC OS] Direct links to astronomy software available for RISC OS.
The Salopian Web - Software links for astronomers professional, education and amateur. Planetaria, sky charts, databases etc. for PC, MAC and UNIX/LINUX platforms.
Astronomy Formulas - Lunar and solar periodicity formulas, definitions, time formulas, notation, astronomical constants with computer code for a programmable HP 48 by James Q. Jacobs.
Orrery - Review of the solar system simulator (by Spacetech) for RISC OS workstations.
Sky and Telescope -- Astronomical Software - Links to the BASIC programs that appeared in Sky & Telescope, to shareware/freeware astronomy related software and to vendors of astronomy software.
Astronomy Explorer - A full-length academic approved course in astronomy on CD-ROM that studies the universe, stars, galaxies, quasi-stellar objects and blacks holes, and our Solar System.
16-bit Astronomy Software - A small archive of astronomy freeware and shareware for DOS and Windows 3.x
Lunar Calendars and Eclipse Finder - Windows software for converting dates in various lunar and other calendars and for finding lunar phases and eclipses of various kinds.
AIPS - Astronomical Image Processing System - [open source - Unix, VMS, etc.] A software package for interactive (and, optionally, batch) calibration and editing of radio interferometric data and for the calibration, construction, display and analysis of astronomical images made from those data using Fourier synthesis methods.
IRAF - Image Reduction and Analysis Facility - [open source - Unix, OpenVMS] A general-purpose software system for the reduction and analysis of astronomical data. IRAF is written and supported by the IRAF programming group at the National Optical Astronomy Observatories (NOAO) in Tucson, Arizona.
ESO-MIDAS: Image Data Analysis System - [open source - Linux/Unix, VAX/VMS/OpenVMS] General tools for image processing and data reduction with emphasis on astronomical applications including stellar and surface photometry, image sharpening and decomposition, as well as imaging and special reduction packages for ESO instrumentation.
AIPS++ - [open source - Unix, WinNT] The next generation AIPS software.
GIPSY - Groningen Image Processing System - [open source - Unix] A highly interactive software system for the reduction and display of astronomical data.
SuperFix/MegaFix - [commercial - DOS, Win3.1] CCD image processing software for amateur astronomers. Handles most file and camera formats. Allows tricolor imaging and 'track-and-stack as well'.
IDL - Interactive Data Language - [commercial - multiplatform] Data analysis, visualization, and cross-platform application development software.
PV-WAVE - [commercial - multiplatform] Advanced visual data analysis software.
MaxIm DL - [commercial, demo available - Win95/98/NT/2000] Image processing and CCD camera control software for astronomical imaging. Supports Apogee, Celestron, FLI, HiSIS, Meade, SBIG, and Starlight Xpress CCD cameras; video cameras, autoguiders, and filter wheels. ASCOM compliant.
CCDPro - [commercial, demo available - Win95/98] Advanced image processing software for astronomy. Image restoration using maximum entropy or Lucy Richardson algorithms, unsharp masking, LRGB color, multilayer align and combine, adaptive dark subtract, free evaluation download.
Seeing simulation and deconvolution - GPL implementation of a seeing simulator and deconvolution via Cross-spectrum and Bi-spectrum.
MIRA - [commercial - Win95/98/NT] Scientific image processing and analysis software.
Cookbook CCD Image Processing - [shareware - Win95] Image processing tool for the Cookbook 245 CCD camera.
AstroArt - [commercial, demo available - Win95/98/NT] A complete software product for analysis and processing of astronomical images. With the built-in star atlas based on the Guide Star Catalogue, it is also possible to perform astrometric and photometric calibration on your images.
CCDSoFT - [commercial, demo available - Win95/98] Main image processing features: unsharp mask, maximum entropy and Lucy-Richardson deconvolution, multilayer with auto-align, median, mosaic, RGB, LRGB images.
Quantum Image - [commercial - Win95/98/NT] Image restoration program, it can restore and enhance defect images (ex. out of focus and noise).
Auriga Imaging - Auriga Imaging's program RegiStar automatically registers (aligns) astrophotos -- no user intervention required.
CCD Astronomy - [some are free, MS-Win] Software tools for Cookbook camera.
AIPS++ - Software system for astronomical data reduction on parallel computers. Provides the capability for calibration, editing, image formation and enhancement, analysis of images and other data streams.
MIIPS - [open source - OpenVMS/Unix] Multipurpose Interactive Image Processing System does astronomical image analysis. The main package runs on OpenVMS, but many subsets can run on Unix. All source code is provided.
ISDA - Irregularly Spaced Data Analysis - [Free - MSDOS, dosemu] Program to analyse irregularly spaced time series - variable star light curves etc.
MIRIAD - Multichannel Image Reconstruction, Image Analysis and Display - [open source - Unix, VMS] A toolbox in the form of an environment with a large set of moderate-sized programs which perform individual tasks involving calibration, mapping, deconvolution and image analysis of interferometric data.
Pleinpot - [open source - Linux/Unix] Astronomical software for data reduction and analysis. This is the software used by the Hypercat database.
Registax - Registax is a freeware tool that registers, stacks and processes image sequences. The program accepts either BMP's or AVI-files as input and will save the results as BMP or FITS.
Picture Window Image Editing Software - Picture Window is a popular tool among serious amateur astrophotographers. By Digital Light & Color.
FITS Image Viewers - [free/open source - Windows, Macintosh, Unix] Download FITS viewers for various platforms.
A Brief Introduction to FITS
IAU FITS Working Group
FITS archive at NRAO - This is an archive for the Flexible Image Transport System [FITS], the standard data interchange and archival format of the worldwide astronomy community.
Flexible Image Transport System (FITS) Support Office - The format adopted by the astronomical community for data interchange and archival storage. Responsible for documenting the FITS standard, participating in its evolution, and advising NASA astrophysics missions on how to present their data in this type of format.
N-Body/Particle Simulation Methods - An extensive online tutorial with examples and code references.
NEMO - [open source - Unix] An extendible stellar dynamics toolbox; has various programs to create, integrate, analyze and visualize N-body and SPH-like systems. In addition there are various tools to operate on images, tables and orbits, including FITS files to export/import to/from other astronomical data reduction packages.
CFD codes list - A large list of commercial, public-domain and shareware Computational Fluid Dynamics codes.
Aarseth's N-body software - [open source - multiplatform] Direct N-body algorithms.
Barnes & Hut Treecode Algorithm - [open source - multiplatform] A guide to a tree code algorithm implementation, used for astronomical N-body simulations.
Stellar Astrophysics Software - [open source - Windows] Various programs for stellar astrophysics. Includes CHANDRA stellar structure software for collapsed objects including rotating white dwarfs and neutron stars, and STARCAL for nuclear astrophysics and the stellar structure of main sequence stars with supernova forecasting.
Laboratory for Computational Astrophysics - A joint project of the National Center for Supercomputer Applications and the Department of Astronomy of the University of Illinois.
COSMICS - Cosmological initial conditions and microwave anisotropy codes for cosmological modelling. COSMICS is a package of fortran-77 programs.
CAPGADGET - [open source - multiplatform] Visualization package to capture and display Gadget N-body simulations.
PCs in Space - Interactive educational Earth and space science software; designed to be used by persons with minimal computer skills. Children can easily direct their own learning by running the modules themselves. A simple tool which uses a multi-disciplinary approach to education. [freeware - Win95, Macintosh]
Astronomy Multimedia Presentations - created at the University of Florida's Astronomy Department. They are free to download as PowerPoint presentations or to view using a web browser and (optionally) the RealPlayer plugin.
CERES Project - Through funding from NASA, faculty at Montana State University and classroom teachers from across the nation have developed an extensive library of on-line and interactive K-12 science education materials for teaching astronomy. [online, muiltimedia]
The Nine Planets - An overview of the history, mythology, and current scientific knowledge of each of the planets and moons in our solar system. Each page has text and images, some have sounds and movies, most provide references to additional related information. [online, multimedia]
CLEA Project - Project CLEA develops laboratory exercises that illustrate modern astronomical techniques using digital data and color images. They are suitable for high- school and college classes at all levels. Each CLEA laboratory exercise includes a dedicated computer program, a student manual, and a technical guide for the instructor. [freeware - Windows, Macintosh]
Alpha Centauri's Universe - Take a full multimedia tour of our universe from Sol to the most distant galaxies via 500 images, 30 video clips (7 streaming), NASA press kits, fact sheets, great selection of public domain software titles, 120 song MIDI library, and over 3000 links to the rest of the internet. [online - multimedia]
Planet Tracker - Classroom-oriented software to teach the concepts of planetary motion. [commercial, demo available - DOS]
Click Thru The Universe - A CD-ROM course that provides a guide and tutorial about the Night Sky. Includes 18 mini-chapters on the constellations, Messier objects, planetary orbits and stellar evolution, along with a Y2K screen saver. [commercial, demo available -- Windows]
PlanetWatch - A colorful multimedia atlas of the solar system. You can learn about each planet's motions, atmospheres, geology, and internal structure. Colorful photographs, animated maps, and data from Voyager, Galileo, and other space probes are combined in an informative and entertaining program. [commercial, demo available - DOS, Win3.1/95/NT]
Mars 2000 CD-ROM - The complete guide to robotic and human exploration of the red planet. Downloadable excerpts, unique website hotlist of over 200 sites. [commercial]
Hubble Space Telescope CD-ROM - Frontiers of Time, two volumes of the Hubble Space Telescope images and scientific text on CD-ROM.
Coeli Astronomy Software - Home of Encyclopedia Astronomica: Coeli Solar Guide, Astrogloss A-Z, Aspects of Astronomy, Visual Planets, and the Windows Dictionary of Astronomy. Other educational titles available here include the popular PC software suite Stella 2000. [freeware & shareware - Win 3.x/95/NT/Me/2000]
The New Windows Dictionary of Astronomy - Classic hypertext astronomical reference source with over 2000 definitions and links to special articles and further reading. [Shareware - Win3.x/95/NT/2000]
Astronomy software reference: Visual Planets - Take this classic hypertext and multimedia tour of our Solar System on your PC. [Shareware - Win 3.1/95/NT/2000]
Hubble Space Telescope Images (350) plus Screensaver - Hubble Space Telescope Images (350) plus Screensaver and Slideshow. Also includes Image Browser and Original Music. These are the Best of the Best from the NASA archives.
The Digital Universe - Astronomical simulation package for the amateur or professional observer. [commercial - Mac]
Space Telescope CD-ROM - Hubble Space Telescope CD-Rom. Volume I, Volume II, Volume III, Comets. [Commercial]
Leonardo da Vinci Codex Leicester Educational Software - Leonardo da Vinci's Educational Software "The Codex Leicester" Notebook by Corbis is Out of Print but On Sale at this Site. Included are Astronomical Observations, Science Experiments, Paintings, Artworks Gallery, and Magic Bar called a Codescope to translate his pages from Old Italian into English in Real Time.
Space Update CD-ROM - CD-Rom with 600 MB of images and movies about the solar system, and the galaxy. "Space Weather" modules brings you today's images of the Sun in many wavelengths and the aurora from space. "Sky Tonight" sections gives today's star view. Funded by NASA. [Commercial - Mac/Win]
GeoAstro Applet Collection - Interactive Java applets display the position, daily and annual path of the sun and the moon, for any time and location. [online - not available for any PC platforms]
Project Pluto - Guide - Desktop planetarium and charting program. [commercial - Dos, Win3.1/95/NT]
Coeli Astronomy Software - Complete line of PC astronomy software, including Stella 2000 - talking astronomy suite with encyclopedic reference, logbook, orrery, and planetarium with telescope control. Free astronomy software gifts on offer here. [shareware,freeware,commercial - Win95/98/Me/NT/2000/XP]
MegaStar Sky Atlas - resource for deep-sky observing. [commercial, demo available - Win3.1/95]
Deep Space - observer-oriented star mapping and telescope control software. [commercial, demo available - DOS]
SkyChart - planetarium program displaying the sky from anywhere on Earth, in the solar system, or in the Milky Way, and for any point in time in the future or past. It supports numerous telescope computer controllers. [commercial, demo available - Win3.1/95/NT, Mac]
SkyMap - a CD-ROM planetarium and star-charting program equally suited to both the casual stargazer and the serious amateur or professional astronomer, although its feature list will appeal especially to the more advanced user. [Commercial, demo available - Win95/98/NT]
HyperSky - an astronomical data display engine allowing full control over what objects are displayed, with "hypertext-like" information about those objects. Beginning to show its age. The demo uses a DOS installer which failed to work on this reviewer's system. [commercial, demo available - Win3.1/95]
SkyTools - Observation planning, charting & logging software. [commercial - Win95/98/NT]
XEphem - Interactive astronomy program for Unix systems with X Windows and Motif. [open source - Unix]
CyberSky - displays the stars, constellations, deep sky objects, Sun, Moon, and planets as visible from any location on Earth at any given time, with optional animation. [shareware - Win95/98/NT]
The Earth Centered Universe - planetarium and telescope control program. [shareware - Win3.1/95/98/NT]
Home Planet - A comprehensive space and astronomy package, with satellite-tracking capabilities. [freeware - Win95/NT]
The Sky - planetarium program showing you the sky on any date, from any place on earth. Has features to benefit a wide range of interest levels, from the beginning hobbyist to the seasoned professional. [commercial, Win98/NT, MacOS]
StarFrame Applet - Web site featuring a free Java planetarium applet which displays the 900 brightest stars and major planets.
DeskNite - Live Celestial Wallpaper - turns your Windows Desktop into the night sky as viewed from your own back yard, no matter what the time or which part of the world you live in. [Freeware - Win95/98/Me/NT/2000]
Data Services - from the U.S. Naval Observatory. Online forms provide sunrise, sunset, moonrise, moonset, and twilight times for one day or one year; moon phases, eclipse charts, and data for major solar system bodies and bright stars.
MyStars! - planetarium program generating accurate charts, with stars, planets, comets, and asteroids. Orrery views make it a useful teaching tool. [shareware - Win3.1/95/98/NT]
Navigator Light - Celestial navigation software with star finder, vetor chart and GPS interface. [commercial, demo available. Windows]
RedShift - multimedia desktop planetarium on CD-ROM. [Commercial]
StarTrax and StarShow - displays stars, constellations, planets, galaxies, and star clusters, with animations and a screen saver. [Shareware - DOS/Win 3.x]
Free Celestial Maps - rudimentary sky-charting program outputs schematic maps in five projection types, using a small star database or the SAO and PPM. [Freeware DOS/Win95]
Adastra Freestar Astronomy - popular astronomy planetarium with live tracking and an HTML guide to the Solar System. [Freeware w/ optional shareware upgrades - Win95/98/NT/Me/XP/2000]
Jovian Satellite Simulator - JupSat95 calculates and displays the positions of Jupiter's four Galilean moons. [Shareware Win9x/NT]
Planet Finder - rudimentary display of the planets for any given date. [Java applet]
Stella 2000 Astronomy Software - Astronomy suite comprising planetarium with scintillation and live tracking, realtime Sky Quiz, observing log and telescope optics, along with an HTML guide to the solar system. The software also integrates a dictionary of 1000 astronomical terms and a book-length primer containing topics like "What are the Stars?", "Choosing a Telescope", "Cosmology", "Dark Matter", "The History of Astronomy", and others. Uses Microsoft Agent speech technology to correctly pronounce over 300 star names. [Shareware - Win95/98/Me/XP/NT/2000]
Starry Night - planetarium program which lets you view the sky from anywhere in the universe. [Commercial - Windows/Macintosh]
Power Age - basic planetarium, with 3 view styles. Includes stars, planets, comets, asteroids and objects from the NGC catalog. [Shareware - Win9x]
EasySky - planetarium with orrery, animation etc [commercial, demo available - Win95/98/Me/NT/2000/XP]
Planet's Orbits - a multi-feature digital orrery. [Shareware - Windows 95/98/ME]
Hallo Northern Sky - planetarium program which includes the Tycho-2 and SAC 7.2 catalogues. Can access the GSC CD-ROMs. [Freeware - Win95]
Stargaze & Copernicus - basic planetarium programs for the PC and Acorn RISCOS computers. [Freeware - Win 95/98/NT/Me and Acorn]
Stellarium - basic planetarium designed to show the sky as seen from any place on Earth at any date. Accuracy has been sacrificed for the sake of "photorealism". Uses the HR catalog of 9000 stars. This reviewer encountered hardware incompatibility problems, despite the appropriate specs. [Freeware Win 95/98/2000 and Linux, + 3D Card with OpenGL support ]
Star-map Studio - program to create and print sky-charts, showing stars, galaxies, clusters, and nebulae. [freeware]
SKYLab Astronomy Software - Deep Sky Star Charting and Telescope Control System. [commercial - Win9x/NT/2000/XP]
Lunar Map Pro - Lunar Map Pro is astronomy software for amateur observers of the Moon. It has over 13000 features with full search data base of all the known craters including NASA Apollo landing sites.[commercial]
Dutch Occultation Association - Free version of Lunar Occultation Workbench ( LOW ).
Stellaris Software - Stellaris is an astronomy shareware program. It includes simulations of the night sky (including NGC objects) and solar system. It also plots user-definable graphs, displays space images and comes with various utilites such as an astronomical calculator.
Deepsky 99 - Software for Observers - [shareware - Win95/98/NT] Deepsky 99 solves an important need for amateur and professional observers. The software allows the user to plan a productive observing session and record what was observed quickly and easily.
AstroPy - [open source - multiplatform] Development and integration of tools and numerical algorithms into the Python scripting language.
JPL Planetary and Lunar Ephemerides - [commercial - multiplatform] This CD contains three Jet Propulsion Laboratory Planetary and Lunar Ephemerides along with a toolbox of FORTRAN subroutines that allow the user to obtain the coordinates of the Sun, Moon, and nine major planets.
STD Aurora Monitor Software - [commercial - Win95/98/NT/2000] Advanced auroral activity monitoring software.
PyEphem - [open source - multiplatform] A module for performing astronomical computations using the Python scripting language.
Dark Skies - [freeware - Windows] Allows you to determine which nights of the year (or month) will be totally dark (i.e. moon is not in the sky). This application will be of primary use to amateur astronomers.
LX200 remote control software - [Commercial, free demo, Win95/98] Get most features from your LX200 telescope keypad hand controller directly on your PC.
NGCView - [commercial, demo available - Win95/98/NT] Astronomical Observation Suite - Astronomical observation and logging software.
SkySight - [commercial, Win/Mac] CCD camera control and image processing, includes SkyChart III.
Calendar software - [open source - mainly Windows] Visual Basic routines that create sundials and calendars, see the dates and names of the year's moons, and calculate Easter.
Multiyear Interactive Computer Almanac - [commercial - DOS, Macintosh] A software system that provides high-precision astronomical data in tabular form for a wide variety of objects; it calculates much of the information tabulated in the benchmark annual publication, The Astronomical Almanac, but it goes beyond traditional almanacs by enabling you to calculate data for specified locations at specified times within a fifteen year interval (1990-2005).
LunarPhase - [commercial, demo available - Win95/98/NT] A comprehensive tool for displaying a variety of information on the Moon and aspects of its behaviour.
GeoAstro Applet Collection - [commercial & freeware - multiplatform] Interactive Java applets display the position, daily and annual path of the sun and the moon, for any time and location.
Starchart - Star mapping software - [opensource - POSIX] There is a sky. There are things in the sky. This program draws maps of things in the sky.
Moon Tool - [Windows] A desktop application that displays the times of the various phases of the moon and a picture of the current phase of the moon.
The Sun API - [commercial & freeware - Windows] A library of functions for calculating key solar parameters for solar design including sundials.
My Astronomy Stuff - [open source - multiplatform] Java code that performs a variety of astronomical functions.
Moonclock - [shareware - MacOS] Real-time graphical representation of the lunar visual aspect for any time/date/location. Elongation, PA bright limb, RA, DEC, percent illuminated, alt/az, heliocentric lat/long, distance, radius, etc.
AstroNotes - [commercial - Windows] A tool for recording observations and planning future observing sessions. It allows tracking of progress on common amateur observing programs (Messier, Herschel, etc).
C88 - an informational tool for amateur astronomers - C88 provides detailed informations about the celestial sphere objects, visible with naked eyes and for the use of an eyepiece of a modest amateur telescope to observe deep sky objects.
Epoch_2000 Temporal Epoch Calculator - Excel spreadsheet calculates temporal variation in astronomic constants, obliquity of the ecliptic, and illumination angles at any specified latitude. You need only input a date or the latitude.
StarTrak home page - Freeware for handheld computers to help you find and track objects of the night sky.
Eyepiece - [freeware - DOS] Helps determine the appropriate eyepiece for specific sky objects (double stars, nebulae, and galaxies), assists in selecting nebular filters, and performs prime-focus astrophotography calculations. Many images are included. Mouse, VGA graphics, 386 and above CPU required.
Guide to the Galaxy - Stella 2000 - [Win 9x/Me/NT/2000 shareware] Mixes sky simulator and astronomical encyclopedia with speaking guide. Simulates most aspects of the space-watching experience. Other free astronomy software included.
Solar System Visualization - [free - online] Animations and movies of solar system objects and spacecraft.
Sky3D - [shareware - Win95/98/NT] Offers realistic views of entire sky with interactive and three-dimensional view modes.
Solar Kingdom - [commercial, demo available - Win95/98/NT] A solar system simulator and planetarium, with planetary encyclopaedia.
OpenUniverse - [open source - Win95/98/NT/2000 or Unix/Linux & OpenGL] Newest NASA data creates a fast 3D display of our home solar system, 25000 stars, galaxy, planets, moons, asteroids and even controllable spacecraft.
Solar System Applet - [online Java applet] This 3-d solar system applet can be rotated and zoomed with the mouse. Below it are links to other online gravity simulators and resources for building solar system simulations.
ChView - [Freeware - Win3.x/95] A three-dimensional aid to viewing some of the nearer stars of our galaxy, navigating the distances between them, and accessing basic stellar information.
Xstar N-body Solver - [open source - Unix] Displays results to the screen or can be used as a screen saver. Includes a college level introductory text on the n-body problem.
Starry Night - [commercial - Win95/98/NT, Macintosh] A planetarium and solar-system simulator; lets you view the universe from anywhere in our planetary neighbourhood in the past, present, and future.
Virtual Galaxy Project - [freeware - DOS] Interactive 3D virtual reality Solar System which allows users to "fly" to and around nearby stars in the Milky Way Galaxy.
Orrery - [commercial - Acorn/StrongARM RISC OS] An orrery is a physical or virtual model of our solar system.
Gravel - [freeware - Windows] Models the interaction between bodies in space according to Newtonian physics.
Gravel - Free simulation software which models the interaction between bodies in space according to Newtonian physics.
GrandTour - Accurate wireframe simulator for the Voyager and Giotto space missions, with animation capability. Developed at JPL for science/navigation, and filmed by the BBC/NOVA. Conveniently runs from any Windows/DOS. Freeware.
1st Light - Solar System Simulation - [freeware & commercial versions - Windows] A fully interactive 3D solar system creation tool and screensaver that allows you to throw out a thumb and hitch a ride through our incredible solar system.
3D Solar System Simulator - A Java applet that shows an interactive 3D representation of the planets and satellites of the solar system.
Planetary Simulation - [commercial, demo available - Windows] Planets is a simulation where you can define a number of objects --stars, suns, or planets. Once defined, you can run the simulation and watch what happens as gravity acts on these objects.
Cosmotropolis - Currently, a working 3D space simulator (step 1). Soon to be networked with support for real-time space exploration (like landing on planets).
SpaceWander Virtual Space Trip! - SpaceWander's award-winning multimedia tour of the Universe features real space pictures from NASA
Space simulator and 3d engine tutorials - Space simulators reviews and tutorials to program a 3d engine for a space sim.
Celestia - A free 3D space simulator that lets you travel through the solar system and beyond to over 100,000 stars. [Windows, Mac; Open source]
StarStrider software 3D planetarium - [shareware - Win 98/ME/2K/XP] A 3D software planetarium. Photo realistic real-time 3D renderings of 2 million stars, galaxies, nebulae, the milky way and more. Includes several educative tutorials.

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