Our researchers are committed to the dissemination of scientific culture, writing popular works and textbooks, as well as accounts of the history of the Observatory and its great scientific figures. As part of its national mission, Observatoire de Paris-PSL also publishes astronomical ephemerides, a reference tool for professional and amateur astronomers, as well as for sailors.
Books (in the French language)
Latest publication
The Astronomical Agenda 2021 has just been published!
At Paris Observatory - PSL, the Institute of Celestial Mechanics and Ephemeris Computing (IMCCE) publishes each year the Astronomical Agenda. The 2021 edition has just been published by EDP sciences and is available in bookstores. Think about it for end of year gifts...
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