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Unexplained Mysteries of 2013

Scientific investigations are all about the search for answers, but their conclusions can create more questions.

Published On 12/20/2013
9:00 AM EST
David A. Aguilar (CfA)
Bailey et al./UA/MagAO
Corbis
Corbis
Durham University
Corbis
Shmuel Marco
Troy Alexander / Tambopata Research Center