The delay is good news on the weather front: The forecast on Tuesday was far from favorable, but Wednesday evening's conditions look much better for liftoff.
Over the weekend, preparations for the rocket's second ever launch into space continued in a hangar near the Launch Complex 39A, and this time SpaceX made a decision to give the world a sneak peek into how the monstrous machine comes together. The SpaceX launch window is expected to last around two hours.
"Static fire of Falcon Heavy complete-targeting April 9 launch of Arabsat-6A from Launch Complex 39A in Florida", tweeted SpaceX.
All of SpaceX's rocket launches are streamed live online via the company's website and official YouTube page.
A launch on a Falcon Heavy carries a price tag of $90 million, compared to competitor United Launch Alliance's Delta IV Heavy, which costs more than $300 million.
The satellite will enter into orbit tomorrow at a height of 22,000 miles (36,000km) above the Earth's equator. It's the first time a Block 5 booster will be used for the big rocket.
In fact, the two side boosters that will fly tomorrow are already earmarked for Falcon Heavy's next flight, now slated for June. The maiden Falcon Heavy flight was essentially a test launch, with even Elon Musk saying that he wasn't sure how things were going to go. The second stage, the one that actually gets the cargo into orbit, comprises a Falcon 9-sourced Merlin engine.
The rocket's launch was watched by millions around the globe, thanks in no small part to SpaceX founder Elon Musk deciding to use a cherry red sports auto as the payload cargo.
According to SpaceX, this is more than 18 Boeing 747 aeroplanes at liftoff.
The Falcon Heavy, which features three Falcon 9 first-stage boosters joined together, had its debut launch in February 2018.
SpaceX also boasts the rocket can lift up to 64 metric tonnes into space, making it more powerful than a Boeing 737 jest full of cargo, crew and passengers.
The early morning SpaceX mission to send a Falcon 9 rocket carrying resupply materials to ISS astronauts will head into space at 5:55 a.m., Friday, April 26.
The Falcon Heavy will carry the Arabsat-6A satellite owned by Arabsat and the King Abdulaziz City for Science and Technology.