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The Casino Club is a historic German-American social club in San Antonio, Texas. It was established in 1854 with gatherings of 20 German-Americans and chartered in 1857 with 106 members. [ 1 ] The club debuted a building known as Casino Hall on Market Street in 1858, which was designed by future mayor Wilhelm Thielepape . [ 2 ]
The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution .
The dark-sky movement is a campaign to reduce light pollution.The advantages of reducing light pollution include an increased number of stars visible at night, reducing the effects of electric lighting on the environment, improving the well-being, [1] health [2] and safety [3] of people and wildlife, [4] and cutting down on energy usage.
DarkSky International, formerly the International Dark-Sky Association (IDA), [1] is a United States–based non-profit organization incorporated in 1988 by founders David Crawford, a professional astronomer, and Tim Hunter, a physician and amateur astronomer.
The aurora borealis, a natural light display in Earth's sky famously best seen near our planet's poles, spent 2024 cropping up in a wider swath of the northern hemisphere.
The sculpture stands at nearly 65 ft (20 m), and weighs more than 45 tons (40,800 kg). [2] The medium is enameled iron. It is located in the middle of a traffic rotary (the intersection of Losoya, Commerce, Market, and Alamo Streets) in Downtown San Antonio, an area known to international tourists as the location for the San Antonio River Walk (or Paseo del Rio), and the Alamo.
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