这是一个虚拟天文软件，太阳系行星、彗星、小行星及80个星座等各种天文资料，一应俱全。

Here are the chief characteristics of the software:  a database of 2,500,000 stars;
 
 a catalogue of 10,000 nebulae, galaxies and star clusters;
 
 a direction of observation which is easily controlled by a mouse and in real time;
 
 a precise representation of the observable sky from a point on the earth’s surface on a given date;
 
 a 3D interface to give more realism to celestial objects;
 
 a calculation of notable astronomical phenomena visible from an observation point on the earth;

 detailed information about each object;
 
 a calculation of the positions of the principal satellites of Mars, Jupiter, Saturn, Uranus and Neptune, of comets and of asteroids;
 
 an outline of the celestial equator, the ecliptic, and a grid of azimuthal and equatorial coordinates;
 
 a 3D outline of the planetary orbits
 
 drives a large range of telescopes
 
 compatible with the seti@home BOINC version
 
 Internet resources are also available:
updated comets and asteroids' elements, querying of DSS (Digitized Sky Survey) servers to obtain a photograph of that portion of the sky being displayed by the program, a notice of the visibility of artificial satellites, etc.

 automatic updates;
 
 a program developed entirely in C++