A Time-Lapse Map of Every Nuclear Explosion Since 1945 - by Isao Hashimoto
30 Mar
2013
30 Mar
'13
9:14 a.m.
Off the astronomy track, but interesting. It’s pretty easy to conclude the southwestern United States has seen more than it’s fair share of exposure. http://www.youtube.com/watch?v=LLCF7vPanrY
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Dave Gary