Associated Press via National Oceanic and Atmospheric Administration/Defense Meteorological Satellite Program
FILE - This undated black and white handout composite satellite image shows the nighttime glow of artificial lights across the United States.

SNOWBIRD — This fall, members of two international organizations dealing with the issue of light pollution will convene conferences at Snowbird.

The International Dark-Sky Association’s 30th annual general meeting will be held Nov. 9 and 10, followed by the Artificial Light at Night’s fifth international conference Nov. 12 through 15. The conference, which is being held in the United States for the first time, is put on in collaboration with the University of Utah’s Consortium for Dark Sky Studies, the first dark-sky studies center in the world.

Utah has more certified international dark-sky places than any other U.S. state, giving conference attendees ample opportunity for star-gazing.

The International Dark-Sky Association meeting will feature experts, advocates, artists and night sky enthusiasts from around the globe. The event is open to the public. To register, log on to darksky.org.

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The Artificial Light at Night conference will examine all aspects of artificial light at night. The broad scope of the conference includes how artificial light is produced, where it is present, its effects on humans and the environment, how it is perceived by the public, and how the benefits and detriments of lighting may be balanced by regulation.

On Sunday, Nov. 11, the two groups will present a public screening of “Skyglow,” a three-year astrophotography project that collected more than 3 million images. The “SkyglowÚ photo book and time-lapse video explores the history and mythology of celestial observation, the proliferation of electrical outdoor lighting that spurred the rise of the phenomena known as "skyglow,” and the dark sky movement that's fighting to reclaim the night skies.