Search Results for “ligh” | Page 12 | DarkSky International

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

The Mackinac Bridge at twilight with colored lights that are reflecting in the water.

How to Do Your Own Lights Out Challenge

Uncategorized

By Mary Stewart Adams “If you can’t win, make the fellow ahead of you break the record.” Every year …

September 2, 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

Downtown main street of Liberal, Kansas sports new streetlights with old-time character, but which pour light out in all directions and up into the sky. With no shielding the exposed globes cause much glare that makes seeing difficult.

Citizens Push Back on LED Lighting

LEDs

By Chris Kyba, IDA board member and light pollution researcher Citizens around the world are raising hell over LED …

August 19, 2015

Dark Skies and Northern Lights

Astronomy

Jonathan Babb, a high school biology teacher from Tucson, Arizona, recently sent us this photo looking for a some …

August 4, 2015

Lighting zones

Resources

“Lighting zones“ (LZ) reflect the base (or ambient) light levels desired by a community. The use of lighting zones …

July 23, 2023

Satellite antenna array under the Milky Way

Scientific research into light pollution

What we do

Light at night and the various forms of light pollution have measurable effects on humans, nighttime ecosystems, and more. …

March 24, 2026

This screen shot from the NASA Blue Marble map shows the incredible amount of light coming stemming from Phoenix, Arizona

IDA Pens Op-Ed on Phoenix’s New Lights

LEDs

On Saturday, 13 June 2015, the Arizona Republic published the following guest editorial by IDA Executive Director Scott Feierabend …

June 16, 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

Measuring light pollution

Get involved

Solving light pollution requires measuring the brightness of the night sky. Learn how — become a community scientist!

July 21, 2023

Unshielded Light at Night

My neighbor’s lighting

Resources

Many of us have experienced this scenario: A neighbor installs a new light fixture on their property. It’s unshielded …

August 22, 2023

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