The largest telescope at the McDonald Observatory is creating a map of the universe to study and measure its expansion. An International Dark Sky designation is helping out by keeping the skies dark and reducing light pollution. | AlexaHaverlah
An International Dark Sky designation is helping scientists at the McDonald Observatory in West Texas study the expansion of the universe.are some of the most breathtaking we’ve ever seen, showing a handful of the very first galaxies that formed after the Big Bang. Researchers at UT Austin’s McDonald Observatory are doing their part to understand our universe, as well.
“We need dark skies to study the universe because galaxies are very faint, fainter than the faintest star you could see with the naked eye,” said Stephen Hummel, the dark skies initiative coordinator at the McDonald Observatory.Located in Fort Davis, the McDonald Observatory is part of a newly designated dark sky reserve — the largest one in the world., or IDA, designated 15,000 square miles of western Texas and northern Mexico the Greater Big Bend International Dark Sky Reserve.
In addition to its size, the reserve is unique because of the variety of partners involved. The National Parks Service, Texas Parks & Wildlife, Mexico, several nonprofits and 11 communities and counties in Texas came together to adopt the dark sky ordinance.A dark sky ordinance requires all structures, including city-owned buildings and private residences, to use shielded, amber lights aimed at the ground. Although the ordinance is the law, it’s not strictly enforced.
For humans, the effects of light pollution are correlated with depression, cancer, diabetes and heart disease.
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