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Loss of the Night

Loss of the Night

Over the last decades, light pollution, the pollution of naturally dark skies by artificial light, has intensified, without regard to its potential impacts on humans and the environment. While some scientific investigation of light pollution and its effects has taken place, it has been narrowly focused within astronomy or the effects on single organisms.

Germany’s Cosalux GmbH developed the Loss of the Night project and app to help scientists measure and understand the effects of light pollution. Citizen scientists can identify visible stars in the sky and contribute to a worldwide citizen science project to create a database for research on health, environment and society.

Loss of the Night allows users to measure light pollution in three steps. The first is an arrow that guides users to a star, similar to a compass. The app then asks users to select visible stars in various constellations and submit their data once observations have been completed. With assistance from stargazers, researchers hope to learn how lamp design contributes to light pollution. Measurements from the app are sent anonymously to the Globe at Night database, a citizen science project that launched in 2006.

Project Details

  • PRINCIPAL SCIENTIST: Franz Hölker
  • SCIENTIST AFFILIATION: The Leibniz Institute of Freshwater Ecology and Inland Fisheries, IGB
  • DATES: Ongoing
  • PROJECT TYPE: Observation
  • COST: Free
  • GRADE LEVEL: All Ages
  • TIME COMMITMENT: Variable
  • HOW TO JOIN:

    Visit the Loss of the Night project’s Web site, or download the app from Google Play.

See more projects in FreeObservationAll Ages.

What Is Citizen Science?

Research often involves teams of scientists collaborating across continents. Now, using the power of the Internet, non-specialists are participating, too. Citizen Science falls into many categories. A pioneering project was SETI@Home, which has harnessed the idle computing time of millions of participants in the search for extraterrestrial life. Citizen scientists also act as volunteer classifiers of heavenly objects, such as in Galaxy Zoo. They make observations of the natural world, as in The Great Sunflower Project. And they even solve puzzles to design proteins, such as FoldIt. We'll add projects regularly—and please tell us about others you like as well.

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