The new headquarters of the Cagliari astronomical observatory are located on the road between Cagliari and the Sardinia Radio Telescope. The library now occupies a large and bright space. The bibliographical heritage amounts to more than 10,000 monographs, most of which are related to astronomy or astrophysics, and a large sector dedicated to scientific outreach and the history of science in general. There are about 50 subscriptions to national and international journals specializing in the fields of astronomy, geophysics and science.
The collection of ancient books consists of 224 volumes with works published from 1552 to 1899, and a large amount of "observing notebooks" completed in the early 1900's at the Carloforte Astronomical Station.
The recent development of radio astronomy gave rise to the study of pulsars and radio sources in general, which is being pursued by several research groups at the observatory. Interesting results have been obtained at the European level, with the publication of articles in the most important international journals.