Watching a rocket blast into outer space is a remarkable experience. But watching a rocket engine strapped into a test facility release its explosive fury here on Earth is somehow even cooler. It gives you a better idea of the engines’ power, and it’s a better opportunity to hear their deafening roar.

This test of a 75-ton rocket engine by the Korean Aerospace Research Institute is immensely satisfying on many levels, but it’s the deep rumble of that engine at full thrust that will have you turning up your speakers, or, better yet, reaching for your headphones.

[YouTube via The Awesomer]

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