Artificial Light at Night: State of the Science 2022 Report

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by John Barentine Dark Sky Consulting, LLC To confront problems effectively, we must understand them. And to tackle the problem of light pollution around the world, we must become familiar with the knowns and the… Read more

A Values-Centered Approach to Nighttime Conservation

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IDA’s Board of Directors adopted a policy implementing the Five Principles for Responsible Outdoor Lighting on January 28, 2021. The Policy is intended to inform IDA’s ongoing work to protect the night from light pollution… Read more

IDA Responds to Satellite Megaconstellations

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Mega constellations, also known as low earth-orbit (“LEO”) satellite constellations, are webs of networked satellites that orbit the Earth at altitudes of 2,000 km or less intended to provide global telecommunications services. The brightness and… Read more

Leading a Movement: IDA 3-Year Strategic Plan (2019-2021)

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Protecting the night sky from light pollution is a critical mission that supports human health and heritage, preserves wildlife habitat, saves money, and provides visual access to celestial discovery for professional and amateur astronomers alike… Read more

IDA Urges Decision-Makers in China Consider Cost-Effective Alternatives to “Artificial Moon”

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According to recent media reports, China’s Chengdu, a city in the Sichuan province, has announced plans for an experimental “artificial moon” to be launched in 2020, with two additional satellite launches slated for 2022. The… Read more