Take a behind the scenes look at the enormous space shuttle countdown clock

KENNEDY SPACE CENTER, Fla. - The space shuttle is one of the most iconic machines in American history, and everything about it is larger in life.

Case in point: the countdown clock at Kennedy Space Center.

The timepiece, which pauses periodically for "holds" that allow engineers to target a specific launch window, is an amazing site, both on television and in person.

But one thing you can't see on television is how massive it is.

You can take a look at just how large the clock is by clicking play video player above.

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