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Time is real and directional at the cosmic level — Jim Al-Khalili argues that while physics has no "now" and no evidence of literal flow, there is a genuine arrow of time embedded in the universe since the Big Bang, a...
Unknown · 0:00
Time is real and directional at the cosmic level — Jim Al-Khalili argues that while physics has no "now" and no evidence of literal flow, there is a genuine arrow of time embedded in the universe since the Big Bang, a...
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