Time is something with which we have tremendous experience, but a detailed and scientific definition of time and how it works eludes even the most educated of minds. In this video, Fermilab’s Dr. Don introduces some of the ways in which time remains puzzling.

Time dilation:
• Relativity: how people get time dilation w…

Twin paradox (with math):
• Twin paradox: the real explanation

Twin paradox (without math):
• Twin paradox: the real explanation (no math)

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