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[Music] >>Eric White: For thousands of years, humanshave experienced a pristine view of the night sky.
However, the expansion of industry and urbanizationhas resulted in an increase of artificial lighting, threatening the clarity of the darkskies world-wide.
>>Eric White: Light pollution illuminatesthe night sky, increasing the risk of developing illnesses such as, cancer, heart disease,and obesity in humans.
Meanwhile, light pollution alters wildlifemigratory patterns, breeding behaviors, and feeding habits.
>>Dan Greenblatt: This is an area that isvery rich in wildlife, we have large populations of a variety of wildlife including large mammalslike bears and wolves and bison and elk so one thing that we're doing is trying to figureout how light affects wildlife.
We are going to hope to use those results to figure out thebest way to light our areas at night.
>>Eric White: Pristine views of the MilkyWay Galaxy are often found within National Parks, which contribute to the conservationof the night sky and provide sanctuaries to nocturnal ecosystems.
NASA DEVELOP partnered with Grand Teton NationalPark, the International Dark-Sky Association, and Wyoming Stargazing to investigate lightpollution within and around Grand Teton using NASA Earth observations.
This project combined data obtainedfrom the VIIRS day/night band with a mathematical model to formulate a light pollution map witha 300km buffer around Grand Teton National Park.
Our team sought to enhance current light monitoringpractices and ordinances within this study area.
As this project continues, thetools created by NASA DEVELOP will assist our partners' efforts to conserve nocturnalecosystems and the beauty of the night sky.