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The Space Launch System rocket that will propel an uncrewed Orion capsule is the most powerful rocket NASA has ever built. It weighs 5.75 million pounds when fully fueled for launch, yet will climb nearly 500 feet straight up in just seven seconds.

"I'm afraid that people think it's routine," NASA Administrator Bill Nelson told TheNews ahead of its highly anticipated first launch. "But when those candles light off, it's anything but routine. It is high-wire act all the way up. ... This is a big deal. And it is beautiful. And it is a monster! The size just overwhelms you."

Here are some remarkable facts and figures about NASA's powerhouse rocket: