To skip ahead, click the links below:

• Astronomy Observatories, Organizations, & Publications
• Ecological Organizations
• Educational Organizations
• Professional Lighting Organizations
• Other Light Pollution Organization
• Vacation Tours & Events

• International Year of Astronomy 2009
• Astronomers Without Borders
  
• Association of Universities for Research in Astronomy

Europe

Observatories:

• Armagh Observatory (UK)
• Astrophysics Institute of the Canary Islands (Spain) in Español
• European Southern Observatory

Organizations:

• British Astronomical Association (See the Campaign for Dark Skies)

Publications:

• Astronomy Now(United Kingdom)
• Astronomy & Space  (Ireland)

North America and the United States

Observatories:

• Caltech Astronomy
  
• Palomar Observatory (Southern CA)
• National Optical Astronomy Observatory  

Organizations:

• American Astronomical Society Committee on Light Pollution, Radio Interference, and Space Debris
• Astronomers Without Borders
• Astronomical Society of the Pacific The Universe in the Classroom, No. 44 - Fall 1998
• New Jersey Astronomical Association
• Prairie Astronomy Club (Lincoln, NE)
• Royal Astronomical Society of Canada

Publications:

• Amateur Astronomy
• AmSky
• Astronomer(The)
• Astronomy
• Astronomy Technology Today
• Sky News (Canada - Royal Astronomical Society of Canada)
• Sky & Telescope

Other Sites:

• Clear Sky Chart a must for the amateur or professional astronomer

International:

• International Sea Turtle Society

North America and United States:

• American Bird Conservancy
• Ecological Society of America
• Urban Wildlands Group

Symposia:

• Ecology of the Night

• EarthSky Science Podcasts

International:

• International Association of Lighting Designers (IALD)
• International Commission on Illumination (CIE)
• LUCI (Light Urban Community International) Association
• Professional Lighting Designers Association (PLDA)

Asia/Pacific:

• Illuminating Engineering Society of Australia and New Zealand

Europe:

• Institution of Lighting Engineers (UK)

North America and United States:

• Illuminating Engineering Society of North America

Publications:

• LD&A (Lighting Design & Application a membership benefit of the IESNA)
• LEDs Magazine

Europe:

• Campaign to Protect Rural England (UK)
• CieloBuio (Italiano) some text in English (Italy)
• Scottish Government Light Pollution Web Pages (UK)
• Light Pollution in Italy in Italiano (Italy)
• Light Pollution Science and Technology Institute in Italiano (Italy)
• Preventie Lichthinder vzw (site in Flemish) (Belgium)
• United Kingdom's Campaign for Dark Skies (CfDS) (UK)
• Vereniging Voor Sterrenkunde (VVS) (site in Flemish) (Belgium)

North America and United States:

• Dark Sky Society
• Nightwise
• SELENE (Sensible and Efficient Lighting to Enhance the Nighttime Environment)