“Beholding the Big Bang”

It will take the motor, coupled with the sets of reduction gears, 13.7 billion years (the estimated age of the universe) to complete one rotation of the last gear.

a sign on the exhibit at the MIT Museum in Boston
Interesting in a “Huh?” sort of way . . .

The video is dated 2013/06/20. I have no idea if the MIT Museum exhibit is still there.