Celestia is a real-time visual simulation of space. Choose a point within the Local Group of galaxies, and Celestia will show you an approximation of how it would appear to your eyes were you actually there. Read more hot
SkyChart (Cartes du Ciel) enables you to draw sky charts, making use of the data in 16 catalogs of stars and nebulae. In addition the position of planets, asteroids and comets are shown. Read more hot
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. Read more hot
BoPlanets is a virtual planetarium showing the planets relatively to any observing planet. The planets can be viewed in ecliptical-, equatorial- or horizontal view. The times of rise, transit and set of a planet can be determined.
Digital Universe Atlas
The Digital Universe Atlas, developed by the American Museum of Natural History's Hayden Planetarium with support from NASA, incorporates data from dozens of organizations worldwide to create the most complete and accurate 3D atlas of the Universe from the local solar neighborhood out to the edge of the observable Universe. Read more
KStars is a Desktop planetarium for Linux/KDE2. It provides an accurate graphical representation of the night sky, from any location on Earth, at any date and time. Read more
OpenUniverse simulates the Solar System's bodies in 3D on your Windows or Linux PC in realtime.
SKYMAP is an astronomical mapping program written in Fortran and C for Unix workstations by Doug Mink of the Smithsonian Astrophysical Observatory Telescope Data Center.
Where is M13?
Where is M13? is a unique application that helps you visualize the locations and physical properties of deep sky objects in and around the Galaxy. Read more
XEphem is a scientific-grade interactive astronomical ephemeris package. XEphem computes heliocentric, geocentric and topocentric information for all objects, as built-in support for all planets; the moons of Mars, Jupiter, Saturn, Uranus and Earth; central meridian longitude of Mars and Jupiter; Saturn's rings; and Jupiter's Great Red Spot, allows user-defined objects including stars, deepsky objects, asteroids, comets and Earth satellites, and provides special efficient handling of large catalogs including Tycho, Hipparcos, GSC.
Xplns reproduces real starry sky on your display of X Window System. It calculates the position of many celestial objects (stars, galaxies, nebulae, constellations, planets, comets, etc.) very accurately. You can enjoy the past and future sky on the desk top as if you have traveled all around the world. In solar system projection mode, you can examine motion of solar objects.
xsky is an X Window System program which is essentially an interactive sky atlas. The familiar actions of scrollbars, sliders, and pointer gestures such as clicking and rubberbanding can be used to move around the sky, adjust the magnification, select a region to view, and bring up detailed catalog information on any object.