Useful Links

• Astronomy and Geophysics Professional Organizations
• Other groups and organizations
• Planetary Science Reference
• Cassini related links
• General Science Reference

Astronomy and Geophysics Professional Organizations

• American Astronomical Association
• AAS Division for Planetary Sciences
• American Geophysical Union
• European Geosciences Union

Other Groups and Organizations

• International Outer Planet Watch
• Enceladus Focus Group

Planetary Science Reference

• Horizons Online ephemeris for planning solar system observations.
• Planetary Data System Archived data from NASA's solar system missions.
• PDS rings node tools Extremely useful tools for planning planetary observations.
• NAIF Data Navigation and Ancillary Information Facility data and toolkits. Used for storing spacecraft navigation and pointing information.
• JPL SSD Solar System Dynamics provides physical information about solar system bodies.
• Planetary Photojournal The place for pictures.
• Planetary Fact Sheets Tables of numbers about the planets.

Cassini related links

• Cassini-Huygens Home JPL's Cassini Homepage.
• CAPS Home Cassini Plasma Spectrometer homepage

General Science Reference

• ADS Astrophysical Data System abstract search. Find that paper you're looking for.
• Math World All the math stuff you used to have to look up in books.
• Science WorldWolfram's Science Reference Site
• NIST Physical Reference Data Atomic and molecular data from the National Institute of Standards and Technology
• UMIST database Rate coefficient database for reactions of astrochemical significance.
• Physical Constants The basic numbers of the universe.