Author: Ruskin Hartley

Skyglow calculator

News

Your donation to DarkSky International supports education, outreach, advocacy, and so much more. Donate Today Join our email list …

July 8, 2026

More than just streaks: 5 truths from the astrophotographers documenting our crowded skies

News

In 2025, DarkSky’s global astrophotography survey revealed rapidly increasing interference from satellite mega-constellations. This policy paper shares those findings …

December 8, 2025

Illuminating the path to sustainable cities

News

DarkSky’s collaboration with LUCI Association to combat light pollution.

July 9, 2024

Artificial Light at Night: state of the science 2023 report released

News

by John Barentine Dark Sky Consulting, LLC To successfully communicate with the public and decision-makers, dark-sky advocates must have …

July 11, 2023

Dark skies over Shanghai: Celebrating International Dark Sky Week with the Shanghai Astronomy Museum and Rémy Martin

News

You can set your watch by it. At 10 pm every night —11 pm in the Summer— the light …

May 8, 2023

Our positions and statements

Astronomy

DarkSky’s positions and statements address critical issues related to light pollution and dark skies, guiding our priorities, communications, advocacy …

December 17, 2025

IDA appeals FCC approval of SpaceX Gen2 satellite constellation

News

IDA has appealed in response to the FCC order and authorization approving SpaceX to deploy and maintain a constellation …

January 6, 2023

Pursuing Europe-wide action on light pollution

News

To support a proposal for EU-wide action on light pollution from the Czech Republic, IDA has developed a European …

December 20, 2022

Responsible Outdoor Lighting at Night (ROLAN) manifesto for lighting

News

By following the ROLAN manifesto, governments, businesses, and individuals can support the implementation of the United Nations sustainable development …

December 19, 2022

Guidance for U.S. homeowners associations

Resources

Homeowners associations can implement effective community standards for outdoor lighting through covenants, conditions and restrictions (CC&Rs).

July 23, 2023

DarkSky advocates for policy priorities that reduce light pollution and promote quality outdoor lighting

Advancing responsible outdoor lighting

Carefully crafted and robust public policy is crucial to fulfilling DarkSky’s mission to restore the nightime environment and protect …

July 26, 2023

Financials

About

DarkSky is committed to financial transparency. We know our members and supporters want to make the biggest difference possible, …

November 7, 2025