Category: Light Pollution | Page 9 | DarkSky International

Dark clouds with the aurora borealis lighting up the sky in gree, purple and orange over Glacier National Park in Montana, U.S.

Clouds and Aurora in a Natural Setting

Light Pollution

By Guest Author Chris Kyba Ray Stinson recently shared these beautiful images of aurora and clouds with me. They …

September 16, 2015

Help measure how the night sky is changing

Light Pollution

By Guest Author Chris Kyba On Saturday, September 12 2015, you can join thousands of people around the world …

September 11, 2015

NASA nighttime satellite photo of East and West Berlin, Germany, showing the difference in lighting.

Mapping Earth’s Night One Picture at a Time

Light Pollution

Cities at Night is a citizen science project that invites the public to help analyze nighttime images taken from …

September 9, 2015

A NASA nighttime satellite image of the City of Paris showing a lot of light pollution.

Journal Provides Free Access to its Theme Issue on Artificial Light at Night

Light Pollution

The academic journal Philosophical Transactions B is allowing free access through September to all articles published in its themed …

September 8, 2015

Stars and the Milky Way above a hillside of Saguaro cactus east of Peridot, Arizona.

Rediscovering the Night Sky in Middle Age

Light Pollution

By Guest Writer Suzanne Wright Before moving to Arizona, I lived my entire adult life in the bright lights …

August 27, 2015

Owl sitting on a branch.

Join Us for Our Google+ Hangout “Light Pollution’s Effect on Wildlife”

Light Pollution

As part of the International Year of Light Cosmic Light theme, IDA has been holding Google Hangouts with world-renown …

August 25, 2015

A nighttime satellite image of Florida showing excessive lighting that creates skyglow.

Planning Our Nights

Light Pollution

Florida Planning magazine (published by the American Planning Association Florida Chapter) features a great article about protecting the night …

August 5, 2015

Conference Attendees Gather and Talk Before the Meeting Starts

Light Pollution Researchers Gather In Québec

Light Pollution

Light pollution researchers from around the world met at Jouvence, Québec, Canada from 26-28 May 2015 for the second …

June 10, 2015

Streetlights on city street at night create glare making it hard to see.

Street lighting

Light Pollution

Streetlights can cause light trespass — light that falls where it’s not intended, wanted, or needed.

August 19, 2025

A shielded LED outdoor streetlight against a setting sky.

IDA Responds to 2014 Nobel Prize for Physics

Light Pollution

Tucson, AZ 7 October, 2014 –The Nobel Committee announced today that it has awarded the 2014 Nobel Prize for …

October 7, 2014

Natural darkness and human well-being

Light Pollution

With the rise of artificial light at night, our natural rhythms are being disrupted—while more research is needed, these …

November 17, 2025