Home Help Track the Death of the Night Sky

Help Track the Death of the Night Sky

GLOBE at Night is aggregating public measurements of the night sky (or lack thereof) from March 22 through April 6 in the Northern Hemisphere and March 24 through April 6 in the Southern. This is the sixth year the group has used you all to map the encroaching light pollution in the world.

Using a web app that is provided online, participants are asked to attempt to identify certain constellations and, if they can, rate them against magnitude charts. The project tracks the increasing problem of disappearing darkness, which can interrupt the cycles of plant and animal life, eventually to a fatal degree.

As the administrators point out, the night sky is a disappearing resource.

“With half of the world’s population now living in cities, many urban dwellers have never experienced the wonderment of pristinely dark skies and maybe never will. Light pollution is obscuring people’s long-standing natural heritage to view stars.”

Among the negative changes light pollution brings, GLOBE lists the following as examples.

  • Disorientation of sea turtle hatchlings by beachfront lighting
  • Nesting choices and breeding success of birds
  • Behavioral and physiological changes in salamanders
  • Disturbances of nocturnal animals
  • Altered natural light regimes in terrestrial and aquatic ecosystems

In addition to the effect on biological life and the psychological – some would say spiritual – effects of the absence of the stars, light pollution decreases the earth’s ability to resolve hyrdocarbon pollution as well, as Wired points out in its coverage. Excess light destroys those chemicals that destroy hydrocarbons and which normally build up in the atmosphere each night.

Last year saw 17,805 participants tracking their night skies; 15,300 the year before; and 6,838 in 2008. They are hoping to at least hit 15,000 this year.

All the datasets from each year are available, to professionals and lay people alike.

Other sources: PopSci

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