The US space's development marked the first-ever commercial satellite launch and Falcon Heavy's second ever flight, including a test launch that had taken place past year in February.
The Falcon Heavy had been scheduled to lift off from the Kennedy Space Center on Wednesday but was delayed because of fierce winds in the upper atmosphere.
Since the Falcon Heavy made its debut in 2018, SpaceX has received several orders for launches, including a US$130 million contract to carry a satellite for the US Air Force.
The rocket is to carry a Saudi Arabian satellite operated by Arabsat, a year after sending founder Elon Musk's red Tesla roadster into orbit as a test.
It consists of the equivalent of three Falcon 9 rockets combined, tripling its thrust.
The main core then made a ideal landing on the SpaceX drone ship, "Of Course I Still Love You", floating on the Atlantic Ocean.
The historic launch was watched by millions around the globe thanks to Mr Musk's body decision to mount a cherry-red Tesla sports auto as the rocket's payload. The Block 5 is the latest-generation Falcon rocket, meant to be reused numerous times with minimal refurbishment. That will be a single Falcon 9 carrying supplies and research experiments to the International Space Station via the Dragon cargo spacecraft. Officials expect similar crowds during today's launch attempt. "So I'm to be here today before I have to fly back to IL", said Niedermann, an aerospace engineer.
SpaceX wants to compete with its arch rival in the lucrative business of launching ultra-heavy satellites into space. It will be just the second time a Falcon Heavy soars. So, the Falcon Heavy can deliver people to the moon and even to Mars.
The launch systems are aimed at ending United States reliance on Russian Soyuz rockets for $80 million-per-seat rides to the $100 billion orbital research laboratory, which flies about 250 miles above the earth. SpaceX boss Elon Musk tweeted "The Falcons have landed". Falcon Heavy's third launch could happen as early as June 2019 - two months from now - if everything is safely recovery.