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NOVA
Back to the Moon Preview
Fifty years after humans first set foot on the Moon, new scientific discoveries are fueling excitement for a return to the lunar surface—this time, perhaps, to stay. Join the scientists and engineers working to make life on the Moon a reality.
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52:56
Do miniscule vibrating strands of energy hold the key to a unified theory of physics?
52:55
Combining the laws of the universe in one theory that explains it all is the Holy Grail