SpaceX rocket exploded in a trial - VIDEO

The fourth prototype of SpaceX's next-generation Starship SN4 rocket exploded Friday after a test at the company's development facility in Texas.

The reasons for the explosion are unknown. It happened at 2:49 in the morning.

The starship rocket is 50 meters in length and 9 meters in diameter. It was designed to carry 100 people to Mars.