Whether you are a student, scientist, guy with short sight or a person who has no opportunity to watch the stars and planets (e.g. due to smog) this planetarium (a representation of the Solar System) software showing 3D simulation of the sky is for you.

To download it click the appropriate (for your system) top icon on the main page

Some cool features:

• is an open-source and free software;

• is available for Linux, Windows, and macOS;

• is a realtime planetarium, which means you'll see the sky exactly as it's seen with your eyes, binoculars or a telescope;

• easy to use;

• minimal system requirements;

• has a lot of help information (built-in in Windows installation file or a downloadable user guide (User Guide link at the top right), collaborate section)

• is full of cool effects:

1. the planets with their satellites;
2. sunrise/sunset;
3. Milky Way;
4. Images of nebulae (a cloud of dust and gas in space from which new stars are coming from);
5. Constellations;
6. hundreds of thousands of deep-sky objects (objects which exist outside the Solar System);
7. ...

• has a powerful interface:

1. zoom;
2. time/location control;
3. you can use telescope view;
4. a lot of keyboard shortcuts;
5. multilingual;
6. equatorial/azimuthal grids;
7. ...

• is very extensible, you can:

1. use existing plug-ins (e.g. you can add a comet) or write your own;
2. add your own scripts (ECMAScript) (e.g. to create custom configurations);
3. add your own deep sky objects, constellation images...;
4. ...