In the really cool department

On 15 December there is a marvelous entry for Astronomy Picture of the Day. Do take a look. You can click back through their whole archive, by the way.


That scene was captured in Ansel Adams’ famous photograph Autumn Moon from Glacier Point, Yosemite National Park. Earlier this year, Texas State University physicists Donald Olson, Russell Doescher and students were able to pinpoint the location and (formerly uncertain) date the original Ansel Adams photo was taken – September 15, 1948. Accordingly, their astronomical detective work predicted that the lunar alignment and waxing gibbous phase would be repeated on Thursday, September 15, 2005, exactly three 19-year Metonic cycles later.

Autumn Moon Encore

You have got to give these Texans credit for working this one out. Amazing.

About Fr. John Zuhlsdorf

Fr. Z is the guy who runs this blog. o{]:¬)
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