Eastern time from Kennedy Space Center in Florida.
Roughly three minutes after clearing the pad, the rocket's two side boosters separated from the core rocket for a synchronized landing at the Cape Canaveral Air Force Station, sparking boisterous cheers from SpaceX headquarters.
The center core booster landed on a floating platform in the Atlantic Ocean about two minutes after that.
If all goes as planned during Falcon Heavy Flight 2, SpaceX will have successfully returned boosters to its East Coast landing zones after more than 14 months of inactivity, landed a Falcon Heavy center core for the first time ever, and recovered three boosters almost simultaneously after a single launch - also for the first time.
One of the hallmarks of most Falcon 9 and Falcon Heavy launches are the landings carried out by the rocket's first stage (s).
Introducing a new ultra-powerful rocket has allowed SpaceX to compete directly with arch rival United Launch Alliance, a joint venture between Lockheed Martin and Boeing, for lucrative government contracts that require heavy-lift launch vehicles. Approximately 34 minutes into the mission, the Falcon Heavy successfully deployed Arabsat-6A, a communications satellite that will provide internet services to people living in Africa, Europe, and the Middle East.
The rocket is composed of three Modified Falcon 9 booster stages, sporting a total of 27 powerful Merlin engines.
The job was to place the six-ton Arabsat-6A satellite into geostationary orbit about 22,500 miles (36,000 kilometers) above the Earth.
The satellite is created to provide television, internet, telephone, and secure communications to customers in the Middle East.
So, the mission was a success, but the Falcon Heavy itself is much more interesting than another satellite in orbit. It's nearly certainly still in orbit around the sun with a mannequin at the wheel. This time, everything went off without a hitch.
In a 2018 test mission, the rocket's core booster missed the vessel and crashed into the Atlantic Ocean.