# The AstroInfo Project

Here you can find a collection of short articles that explain various astronomical concepts used in &kstars;. From coordinate systems to celestial mechanics, you can find answers to your questions here.

The articles sometimes also contain exercises that you can perform with &kstars; to illustrate the concept behind the article.

&contents;

&skycoords; &cequator; &cpoles; &csphere; &ecliptic; &equinox; &geocoords; &greatcircle; &horizon; &hourangle; &meridian; &precession; &zenith;

&julianday; &leapyear; &sidereal; &timezones; &utime;

&blackbody; &darkmatter; &flux; &luminosity; &parallax; &retrograde;

&ellipgal; &spiralgal; &magnitude; &stars; &colorandtemp;