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Affichage des articles dont le libellé est ASTRONOMY - Firefall by Moonlight. Afficher tous les articles
Affichage des articles dont le libellé est ASTRONOMY - Firefall by Moonlight. Afficher tous les articles

10/05/2022

ASTRONOMY - Firefall by Moonlight

 2022 May 10

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Firefall by Moonlight
Image Credit & Copyright: Tara Mostofi

Explanation: On certain dates in February, an elusive firefall can be spotted at sunset in Yosemite National Park, when water flows, the weather cooperates and the direction to the setting Sun is just right. Often photographed from vantage points below, at the right moment the park's seasonal Horsetail Fall is isolated in the shadows of the steep walls of El Capitan. Then, still illuminated with rays of reddened sunlight the waterfall briefly takes on a dramatic, fiery appearance. But a Horsetail firefall can be photographed by moonlight too. Even more elusive by moonlight, the firefall effect can also be seen when a bright Moon sets at the right direction along the western horizon. And skies were clear enough for this well-planned imaging of an ephemeral Horsetail firefall, lit by a bright gibbous Moon setting in the early morning hours of April 15.

BIOMES - Prairies - savanes - brousses

Des prairies, des savanes et des brousses, il y en a aussi dans les régions tempérées. FuturaSciences