SpaceX: Elon Musk's Starship rocket to make second flight
American entrepreneur Elon Musk will have another go shortly at launching his mammoth new rocket, Starship.
The vehicle's maiden flight in April ended in spectacular style when it lost control and exploded four minutes after leaving the ground in Texas.
Debris from the 120m-tall (393ft) rocket fell into the Gulf of Mexico.
Engineers at Mr Musk's SpaceX company have since made "more than a thousand" changes to Starship's systems to try to make the vehicle more reliable.
Lift-off from the coastal town of Boca Chica is scheduled to occur within a 20-minute window, starting at 07:00 local time (13:00 GMT).