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Optical Effects
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Noctilucent clouds spotted over the Keyhaven River, near Lymington, Hampshire, England
Noctilucent clouds spotted at 0300 BST over Winchester, England
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Signs of noctilucent spotted by Paul's twin brother, Richard, near Adlington, Cheshire, England
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Cloud-to-cloud lightning spotted during a thunderstorm near Lewisham, London, England
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Noctilucent clouds spotted by Julianna Dollinger's friend, Adam Cordero, over the Atlantic Ocean, on a flight to Spain
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A thunderstorm captured at night, with lightning highlighting what appears to be an Altocumulus lenticularis in the midst of the storm system, spotted near Waterford, Wisconsin, US
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A birds-eye view of a Cumulonimbus, illuminated by lightning at night, spotted over Europe on a flight from Egypt to the United Kingdom
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Lunar corona spotted over Jiangsu, China
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Altocumulus perlucidus spotted at night over Velehrad, Czech Republic
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A lunar 22-dagree halo spotted over Dallgow-Döberitz, near Berlin, Germany
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A lunar 22-degree halo spotted over Westbury sub Mendip, near Wells, Somerset, England
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A pre-dawn view two hours prior to sunrise, with the comet Pan/STARRS visible near the horizon, spotted over the Glen Canyon Recreation Area, Utah, US
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Moon Dogs, also known as paraselenae, a rare optical phenomenon, spotted along with a 22-degree lunar halo over Sumirago, Varese, Italy
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Aurora Borealis (Northern Lights) spotted over Krzeszowice, Poland
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Aurora Borealis (Northern Lights) spotted over North Dundas Township, Ontario, Canada
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Aurora Borealis, also known as the Northern Lights, spotted looking out to the Irish Sea from Gaw Hill, Ormskirk, England
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