Online and Interactive Astronomy Links
- Celestial Sphere - The web's best online virtual planetarium.
- AstroViewer - Dirk Matussek's really well done planetarium applet with 1400 stars. Nice user interface. Can generate printable charts (pdf format too.)
- Sky View Cafe - Another virtual planetarium with planetary orbits and ephemeris, calendar, and Jovian/Saturn moons. Easily jump to a number of celestial events.
- Sky & Telescope Interactive Sky Chart - A cool planetarium applet from Sky and Telescope magazine. Can generate printable sky charts.
- Stars
and Constellations - Information and views of the constellations. Includes interactive star charts.
- Fourmilab - John Walkers's collection of online software including Earth and Moon Viewer, Solar System Live and Your Sky.
- GeoAstro Applet Collection - Juergen Giesen's collection of small astronomy applets.
- Night Sky Observer - Lots of astronomy news.
- Star Journey: The Heavens - Star Chart @ nationalgeographic.com
- SEDS - Home of Nine Planets Solar System Tour, Messier Deep-Sky Catalog, and various other gems.
- Skyview - NASA's virtual telescope.
- Heavens Above - Satellite and star observation maps.
- Virtual Solar System - Virtual reality tour of the solar system from National Geographic.
- Solar System Simulator - Generate pictures of solar system bodies from many different viewpoints. From NASA/JPL/Caltech.
- Orbiter - A visually stunning and realistic spacecraft simulator for Windows.