Musk's Starship rocket is designed to ultimately be fully reusable, similar to SpaceX's Falcon 9 launch vehicles, as part of an effort to save on costs.

SpaceX helped revolutionise the launch industry by designing reusable rockets. 

Starship will take off later today consisting of two stages. The first is its Super Heavy booster, which is 230 ft tall and has 33 engines, powered by a mix of liquid oxygen and Methane generating 17 million pounds of thrust, more than twice that of the Saturn V rockets used to send Apollo astronauts to the moon. 

After about three minutes, this stage will separate and the top half of the craft, Starship, will fire up its six raptor engines. 

The Super Heavy booster is then designed to ultimately return to earth, flying down and landing on its tail. For the test flight, it will crash land in the sea.

The combined launch vehicle stands 390ft tall – with Starship at 164 ft and the booster at 230 ft. 

The Starship spacecraft will then fly around the earth before crashing into the Pacific. Ultimately, it is designed to take astronauts to the Moon and Mars.