Specifically for Mr. Calderone, a link to a beautiful site:


It explains a lot of athmospheric and optic phenomena, including nice pictures. Including Rays&Shadows, Water Droplets, Rainbows, Ice Halos, and the High Athmosphere.

Also, for more like these, check out http://www.polarimage.fi/.

Last but not least, I used to visit http://antwrp.gsfc.nasa.gov/apod/ daily. It has a single new astronomical picture for each day, with a short description and loads of links to in-depth information.

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