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Description Dr. Drake, revisiting the variables of the Drake Equation, several decades after its inception.
Date
Source Flickr: Dr. Frank Drake
Author Raphael Perrino
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This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 3 January 2013, 23:18 by Cqdx. On that date, it was confirmed to be licensed under the terms of the license indicated.
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Frank Drake

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24 June 2012

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Date/TimeThumbnailDimensionsUserComment
current23:22, 3 January 2013Thumbnail for version as of 23:22, 3 January 2013646 × 724 (114 KB)Cqdxcrop, color, mirror
23:18, 3 January 2013Thumbnail for version as of 23:18, 3 January 20132,048 × 1,356 (1.27 MB)Flickr upload botUploaded from http://flickr.com/photo/79186985@N02/7791047088 using Flickr upload bot

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