SUNSET: 
"Discover the Night" During International Dark Sky Week, April 15–22
Protect the night sky — join the International Dark-Sky Association for activities during International Dark-Sky Week.
Light Pollution Is Increasing Even Faster Than We Realized
The average brightness of the night sky is increasing by 10% every year, making the stars less visible.
Light Pollution Is Creeping Up on the World's Observatories
Astronomical observatories enjoy some of the world’s darkest night skies. But even there light pollution is spreading, a new study suggests.
Bright New Satellites Join a Crowded Sky — Here’s How You Can Help
The imminent launch of a BlueWalker satellite, with a giant phased array antenna, portends a brightening night sky. Amateur astronomers can help record these changes with the goal of mitigating them.
What we know about Light Pollution – and What We Don’t
The International Dark-Sky Association’s has summarized more than 300 peer-reviewed studies on the effects of artificial light at night in an effort to help dark-sky advocates.
Celebrate Dark Skies This Week, April 22–30
Are you interested in combating light pollution? International Dark Sky Week, which starts today, offers events in which you can learn how.
Under One Sky: Let's Address Light Pollution Together
Concerned about light pollution? Join a virtual conference this weekend that looks at ongoing global efforts to mitigate it.
Pittsburgh Goes Dark: Could This New Dark-Sky Ordinance Begin a Trend?
The city's parks, facilities, and streetlights will all get dark-sky-friendly lighting, but is it too early for amateur astronomers to get excited?
Stargazer's Corner: Adventures Under the Night Sky
The Pandemic and Light Pollution
Student Kathryn Huth set out to conduct astronomical experiments when she noticed that — amidst the pandemic — she could see more stars in the sky.
Discover the Night: International Dark Sky Week is Here!
Light pollution is insidious in today’s world. This International Dark Sky Week, become inspired to see what you can do to raise awareness.
Under One Sky — Help Address Light Pollution
Do you care about protecting the night sky? Join the International Dark Sky Association’s virtual conference this weekend.
Photographers “Capture the Dark” with Stunning Images of the Night
Stunning images of the night remind us why we need to protect dark skies. See the photos that won the International Dark-sky Association's contest.
Explore the Night with Bob King
How Dark Is Your Night Sky?
Traditional and digital tools can help you learn the naked-eye magnitude limit of your sky and find out if the darkness has changed at your observing site.
Starry Success: Protecting the Night Sky Above La Palma
Ten years ago, La Palma was declared a "Starlight Reserve" and measures were implemented to protect its skies from light pollution. How did they work?
Measuring the Impacts of Light Pollution
Light pollution is pervasive, and its impact on people is larger than you might think.
It's International Dark-Sky Week!
What began as a student's simple idea a decade ago has grown into a worldwide celebration of the night sky and easy ways to reduce light pollution.
Help Keep Our Skies Dark — Join IDA Today
It's high time that we amateur astronomers got serious about protecting the night sky from light pollution.
Rate the Darkness of Your Sky
A new website shows how light pollution spreads around the globe — using data gathered by its users.
AMA Addresses Light Pollution
The American Medical Association has released a report detailing several possible health concerns related to nighttime light exposure. But some lighting researchers worry the conclusions are more alarmist than is warranted.
U.S. Physicians Join Light-Pollution Fight
Thanks to a full-court press by a cardiologist with a passion for astronomy, the American Medical Association has taken a stance in the fight to make outdoor lighting more benign to humans — and to the stars above.
