Tag

Night Sky
22
May

Changes in night sky brightness after a countywide LED retrofit

May 22, 2021
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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16
May

Lost in Light II – a short film on Light Pollution

May 16, 2021
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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16
May

Saving the Dark | Documentary | Light Pollution [HD]

May 16, 2021
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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01
Apr

The proliferation of space objects is a rapidly increasing source of artificial night sky brightness

April 1, 2021
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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13
Mar

Critics take aim at SpaceX’s Starlink, Amazon’s Project Kuiper and other satellite constellations

March 13, 2021
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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19
Feb

Cities Can Help Migrating Birds on Their Way By Planting More Trees and Turning Lights Off at Night

February 19, 2021
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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25
Sep

Are Elon Musk’s ‘megaconstellations’ a blight on the night sky?

September 25, 2020
Source: https://www.theguardian.com/science/2020/sep/12/stars-astronomy-spacex-satellite-elon-musk Miniature satellites open up a world of technological possibility. But experts say they degrade the astronomical landscape. Stuart Clark, Sat 12 Sep 2020 17.00 BST The natural serenity of the night sky is a touchstone for all of us. Everyone alive today looks at the same stars no matter where they are located on the...
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22
Sep

Timpanogos Cave National Monument Named Second Urban Night Sky Place

September 22, 2020
The International Dark-Sky Association is pleased to announce the certification of Timpanogos Cave National Monument as an Urban Night Sky Place (UNSP). This International Dark Sky Place designation was developed in 2018 to draw attention to the role urban protected landscapes play in raising public awareness of light pollution. Timpanogos Cave is the first National Park Service...
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02
Sep

Satellite mega-constellations risk ruining astronomy forever

September 2, 2020
MIT Technology Review by Neel V. Patel September 2, 2020 The astronomy community is on edge. The growing number of satellites streaming through low Earth orbit is making it almost impossible to get a clear view of the sky.  The true threat these mega-constellations pose to the astronomy community is only just beginning to be understood....
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30
Jul

Amazon’s Kuiper constellation gets FCC approval

July 30, 2020
by Caleb Henry — July 30, 2020 WASHINGTON — The U.S. Federal Communications Commission on July 30 approved Amazon’s request to operate a constellation of roughly 3,200 internet satellites in low Earth orbit.  The FCC said Amazon has until July 30, 2026 to launch at least 50% of its satellites in order to maintain its authorization, and until...
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