https://www.russellsastronomy.com/sky/atmospheric/atmospheric.htm
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https://www.russellsastronomy.com/sky/atmospheric/atmospheric.htm
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february 2004
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Varying upper-atmospheric electrical phenomena. (x)
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"A swamp lake in Lauhanvuori National Park, Isojoki, Finland." (Wikipedia)
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https://www2.dnr.state.mi.us/
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https://extension.usu.edu/
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Lake Castrovalva area of Lechuguilla Cave in Carlsbad Caverns National Park, New Mexico. (Robbie Shone)
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Sun dogs near Whitehorse, Yukon.
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SUN DOG: Either of two colored luminous spots that appear at roughly 22° on both sides of the sun at the same elevation. They are caused by the refraction of sunlight passing through ice crystals. (eptx.tripod.com)
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A topographical map of Alpine, the highest town in Arizona at an elevation of 8,050 feet. This perspective image was created by joining Landsat 7 data and Digital Elevation Model (DEM) data. (Earth Observatory)
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765 Price Canyon Rd, Pismo Beach, CA 93449
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765 Price Canyon Rd, Pismo Beach, CA 93449
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Most of Carlsbad Caverns' speleothems (cave deposits such as these stalagmites) consist of the mineral calcite (CaCO3) that precipitates from groundwater that enters a cavern. Some speleothems are also composed of aragonite and gypsum. (USGS)
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Foot bridge across Natasaheen River near Carcross in Yukon, Canada. (galenfrysinger.com)
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Onondaga Cave State Park
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"Lily pad room" at Onondaga Cave State Park, Missouri. (Flickr)
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