"The arc of the Milky Way seen from a truly dark location is part of our planet's natural heritage," said Connie Walker, and astronomer from the U.S. National Optical Astronomy Observatory in Tucson, Arizona. Yet "more than one fifth of the world population, two thirds of the U.S. population and one half of the European Union population have already lost naked eye visibility of the Milky Way." In these areas, people are effectively living in perennial moonlight. They rarely realize it because they still experience the sky to be brighter under a full moon than under new moon conditions. "Reducing the number of lights on at night could help conserve energy, protect wildlife and benefit human health," astronomer Malcolm Smith of the Cerro Tololo Inter-American Observatory in Chile. One study found an increased risk of breast cancer for women living in areas with the most light pollution (abstract). Some communities are embracing their dark skies, such as the New Zealand community of Tekapo, possibly home to first "Starlight Reserve," waiting on UNESCO's official approval. Not sure where to look in the vast night sky? Follow some guidelines, or check the view in Chile, Queensland, Australia, or Texas.
posted by filthy light thief on Jun 13, 2009 - 74 comments

Time to turn off the lights. "Cities needlessly shine billions of dollars directly into the sky each year and, as a result, a fifth of the world's population cannot see the Milky Way. Malcolm Smith explains why a dark sky has much to offer everyone." [Via]
posted by homunculus on Jan 1, 2009 - 47 comments

The clear sky clock (this one is for Boston) provides a graphical representation of seven factors that affect the clarity of stargazing: cloud cover, transparency, seeing, darkness, wind, humidity, and temperature. Once you've figured out where and when to go stargazing (probably somewhere rural) make a custom map for your location so you know what you're seeing.
posted by nekton on Sep 27, 2006 - 7 comments

"Light Pollution - and the return of the night" (more inside)
posted by slimepuppy on Feb 8, 2006 - 54 comments

Wanted: New New York Street Lights. NYC organizes an international competition for new streetlight designs. (Those of you wishing to skip the Flash title and the framed navigation, go straight to the meat.) I have a request: lights that help minimize light pollution. (NYC Competition link via Veer Ideas.)
posted by brownpau on Mar 3, 2004 - 7 comments

So maybe rolling blackouts are a good thing. "Light pollution" means we don't see the universe today that we saw it when we were kids. What's the balance between being able to see that hazy something we know as the milky way (aka "us") and safe streets, aesthetics and convenience?
posted by dchase on Jul 14, 2001 - 9 comments