New photo added to gallery via Android https://ift.tt/2KqKPjg
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The Preciousness of Time: A Stephen Hawking Tribute "Inspiring" is a word that gets thrown around a lot, but Stephen Hawking was...
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What Is The Lifetime Of A Photon? What is the lifetime of a photon? As you may have read somewhere, light only takes 8 minutes to cover th...
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