astronomy.com is for anyone who wants to learn more about astronomy events, cosmology, planets, galaxies, asteroids, astrophotography, the big bang, black holes, comets, constellations, eclipses, exoplanets, nebulae, meteors, quasars, observing, telescopes, nasa, hubble, space missions, stargazing, and more.

a complete guide to the eight planets with facts and information on the various planets, moons and objects in our solar system and beyond.

this encyclopaedia provides latest detections and data announced by professional astronomers about exoplanetary systems. it is about objets lighter than 60 jupiter masses, which are orbiting stars/brown dwarf or are free floating. it provides also a database about planets in binary systems, and a database about circumstellar disks.

découvrez l'astronomie et les merveilles du ciel étoilé avec nos dossiers pratiques, nos ouvrages d'édition et notre matériel d'observation.