Crepuscular Rays Over Lake Michigan

Bild Note: 5 (2 Votes)

⏴ previous	Bild Upload von 18.02.2016 21:43	next ⏵
zorg.ch #112719 by [z]Barbara Harris @ 12.08.2010 00:00 - nach oben - Crepuscular Rays Over Lake Michigan Explanation: What could cause such rays of dark? Dark sky rays were caught in spectacular fashion earlier last month from Pentwater, Michigan, USA, looking west over Lake Michigan. The cause is something surprisingly familiar: shadows. Clouds near the horizon can block sunlight from reflecting off air, making columns outward from the Sun appear unusually dark. Cloud shadows can be thought of as the complement of the more commonly highlighted crepuscular rays, also visible above, where sunlight pours though cloud holes. Sometimes, on the opposite side of the sky, anticrepuscular rays can also be seen. Polls: Which APOD would you choose for last week's APOW or July's APOM? Credit & Copyright