Coeli Stella 2000 is an astronomy suite that includes a full-featured planetarium, an observing log and list builder, Coeli Time Line (also known as Stella BC), a live ephemeris, location browser, and sophisticated searches embracing planets, comets, DSOs, and up to 300,000 stars. Planetarium effects include scintillation, extinction, refraction, and precession in point source, photo plate and spotlight display styles; and the complete Messier catalog in image icons. An integrated HTML guide to the solar system, a 1000-term astronomical dictionary, and the 2nd revised and enlarged edition of Aspects of Astronomy -- a book-length tutorial covering topics such as 'What are the Stars?', 'Choosing a Telescope', 'Cosmology', 'Dark Matter', 'Eclipses', and 'The History of Astronomy', to name but a few -- are included. And now Stella talks and teaches aloud. - New with version 5.0 comes complete integration of Microsoft Agent speech technology, so that animated characters can guide you painlessly through the pronunciation of a myriad of arcane star names and lore, and even read aloud from Astrogloss and Aspects of Astronomy