SpaceX has accomplished a number of landmark achievements since its founding in 2002 although few have been as impactful as what took place exactly one year ago to the day.

On December 21, 2015, SpaceX for the first time successfully landed a Falcon 9 reusable rocket following a mission to deliver 11 commercial satellites into orbit some 500 miles overhead. The historic event aired live via YouTube streaming broadcast, offering viewers an inside look as SpaceX employees watched and ultimately celebrated the landing.

What the stream didn’t show, however, was founder Elon Musk’s reaction.

Turns out, a film crew was following Musk around on that day and that footage has just been released courtesy of National Geographic. As you’ll see, Musk was on the edge of his seat and just as ecstatic as the hundreds of employees we watched celebrate a year ago.

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