Founded in 1991 in Costitx, by keen and talented amateur astrologists, its stature has increased with the years. Its principal research objectives include comet observation using high-resolution imaging, work on atmospheric phenomena involving the planets Jupiter and Saturn, and follow-up on Near-Earth-Objects. It is also credited with the discovery of the most asteroids in Spain.

The Planetarium, which is relatively new, organises courses and events for children, students and the general public throughout the year.