#1 By: Maggie Koerth-Baker, September 9th, 2013 11:54
#2 By: technogeek, September 9th, 2013 11:58
Neat. Great illustration of how correct scientific conclusions are confirmed as new data comes in.
#3 By: Tom Mathews, September 9th, 2013 14:14
Amazing... these lines of magnetism represent the growth rings of the planet on a millenial scale.
#4 By: Maggie Koerth-Baker, September 14th, 2013 11:55
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