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Night Sky
Format: Book Describes the scientific and cultural value of the sky Illustrates the environmental damage of excess light Explains the relationship between astronomy and space technology Introduction This book takes a close look at our relationship with the sky, the stars, light and darkness. In particular, it examines how light pollution has interfered with the...
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Source: ScienceNews https://www.sciencenews.org/article/satellite-mega-constellations-night-sky-stars-simulations “Mega-constellations” from those satellites will be visible to the naked eye, simulations suggest By Lisa Grossman Companies like SpaceX and Amazon have launched hundreds of satellites into low orbits since 2019, with plans to launch thousands more in the works — a trend that’s alarming astronomers. The goal of these satellite “mega-constellations” is...
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Jun 30, 2021 Andy Lawrence This is a short promotional video for “Losing The Sky”, a short non-technical book about the threat to the sky from satellite mega-constellations. You can find the book at Amazon, Apple Books, and Google Play Books. To see a bit more about what the book is all about, go to...
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Li-Wei Hung, Sharolyn J. Anderson, Ashley Pipkin, Kurt Fristrup, Changes in night sky brightness after a countywide LED retrofit, Journal of Environmental Management, Volume 292, 2021, 112776, ISSN 0301-4797,https://doi.org/10.1016/j.jenvman.2021.112776.(https://www.sciencedirect.com/science/article/pii/S0301479721008380) Abstract The US National Park Service (NPS) Night Skies Program measured changes in sky brightness resulting from a countywide lighting retrofit project. The retrofit took place in Chelan County, a gateway...
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Sriram Murali Being under a sky full of stars makes you feel tiny, humble, kind and caring. But, thanks to light pollution, most people lack this connection. Millions of kids are robbed of finding their passion for Astronomy. We’ve lost the potential for thousands of great minds. We are losing our identity only increasing the...
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80% of the world’s population live under light polluted skies. What do we lose when we lose sight of the stars? Excessive and improper lighting robs us of our night skies, disrupts our sleep patterns and endangers nocturnal habitats. The current advances in LED technology have enabled several cities to safely light their streets and...
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M Kocifaj, F Kundracik, J C Barentine, S Bará, The proliferation of space objects is a rapidly increasing source of artificial night sky brightness, Monthly Notices of the Royal Astronomical Society: Letters, 2021;, slab030, https://doi.org/10.1093/mnrasl/slab030 Abstract The population of artificial satellites and space debris orbiting the Earth imposes non-negligible constraints on both space operations and ground-based optical...
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Source: https://www.geekwire.com/2021/critics-take-aim-spacex-starlink-amazon-kuiper-satellite-constellations/ BY ALAN BOYLE on March 11, 2021 SpaceX, Amazon and OneWeb say their satellite mega-constellations will make broadband internet goodness available to billions of people around the world who are unserved or underserved — but some say those promises have to be weighed against the potential perils. These critics cite the risk of catastrophic satellite collisions, concerns about cybersecurity...
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Source:  https://www.ecowatch.com/cities-migrating-birds-2649952941.html?rebelltitem=5#rebelltitem5 By Frank La Sorte and Kyle Horton Millions of birds travel between their breeding and wintering grounds during spring and autumn migration, creating one of the greatest spectacles of the natural world. These journeys often span incredible distances. For example, the Blackpoll warbler, which weighs less than half an ounce, may travel up to...
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