Teaching-you Astronomy Skills

User-friendly exploration, unrivalled scope and authoritative content Full-screen display with on-screen labels Guided introductory tours and narrated animations Celestial objects--stars, deep space objects, asteroids, constellations, planets and moons Sky window and Sky diary Video and photo gallery Complete Hipparcos and Tycho-2 stellar catalogues, and the new Tycho double star catalogue Explore incredible maps of the planets and moons New catalogues of variable stars and optically visible open clusters User-friendly operation ensures effortless interstellar exploration, Platforms: Windows 98