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By Denise Chow
Thirteen months after its first flight, SpaceX's mbadive Falcon Heavy rocket is preparing for its first commercial launch on Wednesday.
The 230-foot-high rocket is scheduled to take off at 6:35 p.m. ET from the Kennedy Space Center in Cape Canaveral, Florida. This will be only the second most powerful rocket flight in the world in operation.
The launch will be broadcast live online through the SpaceX YouTube channel.
The Falcon Heavy will take a satellite of telecommunications from Saudi Arabia to the orbit of the Earth. The 13,200-pound Arabsat 6A satellite is designed to provide television, internet and mobile phone services to parts of the Middle East, Africa and Europe.
The launch was originally scheduled for Tuesday, but bad weather in Florida forced a one-day delay. The current weather forecast for the area predicts an 80 percent favorable weather probability at the time of release on Wednesday.
The rocket consists of three central impellers based on the SpaceX Falcon 9 rocket, which the company has been using to transport cargo to the International Space Station since 2012. The rocket motors "generate more than 5 million pounds of thrust." at the takeoff, doing it the The most powerful operational rocket in the world. by a factor of two, "SpaceX tweeted on April 7.
The Falcon Heavy weighs more than 3.1 million pounds and is designed to transport up to 140,000 pounds into low Earth orbit, more than any other American rocket from NASA's Saturn V, which took the Apollo astronauts to the Moon in the 60s and 70s.
The Falcon Heavy made its test launch in February 2018, when it placed a whimsical payload into space: a cherry-red Tesla Roadster with a mannequin dressed in a spacesuit named Starman in the driver's seat.
SpaceX CEO Elon Musk, who also heads Tesla, said he intended to put the car into orbit around Mars. But the vehicle ended up in orbit around the sun, where Musk said it could remain "for millions or billions of years."
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Denise Chow is a reporter and editor of NBC News MACH.