Astronomy 16: WWW Links

Most useful:

• AstroWeb - Summary of Astronomy on the Internet
• NASA Astrophysics Data System (ADS)
  • Astronomy Abstract Service
• SkyView Virtual Observatory
• SIMBAD Astronomical Database
• Astrophysics Preprint Server ("astro-ph") - clink on "index" to bring up a search form
• Google Calculator (knows about most astronomical units; click here for an example!)

• The Astrophysical Journal
• National Radio Astronomy Observatory (NRAO)
• National Optical Astronomy Observatory (NOAO)
• Hubble Space Telescope
• Chandra X-ray Observatory
• Spitzer Space Telescope
• Astronomy Digital Image Library
• NASA Extragalactic Database (NED)
• VizieR Catalogue Service
• Coordinate Calculator
• Wavelength / Frequency / Energy Converter
• Central Bureau for Astronomical Telegrams
• American Astronomical Society (AAS)
• International Astronomical Union (IAU)
• Wolbach Library
  • Electronic astronomy journals available at Harvard
• The Astrophysical Calculator
• Recommended Rest Frequencies for Observed Interstellar Molecules
• American Association of Variable Star Observers (AAVSO)
• Eric Weisstein's World of Physics
• Eric Weisstein's World of Mathematics
• Astronomy Tools
• Local Sidereal Time Clock
• Rise and Set Times for Sun, Moon and Planets
• Gravity simulator