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Study investigates the mysteries of lights in the sky by looking to the past

Two new scientific papers may help unlock the mysteries of lights in the sky by looking at sky survey plates from the 1940s and 50s, an era before man-made objects were in orbit. NBC News' Gadi Schwartz talks with Beatriz Villarroel from the Nordic Institute of Theoretical Physics, an author on both papers, about what the study could mean.