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Stephen Sekula (steve@chirp.cooleysekula.net)'s status on Monday, 08-Aug-2016 00:31:43 UTC Stephen Sekula Revealing the spectrum of light emitted by elements on Earth teaches us about the matter in the cosmos. #PHYS1311 https://t.co/Rg8kycssob https://chirp.cooleysekula.net/attachment/13960