NASA's new moon rocket is set to launch this morning, but delays have complicated the process.

NASA's new moon rocket is set to launch this morning, but delays have complicated the process.

Launch controllers repeatedly halted the fueling operation of NASA's new Artemis 1 moon rocket on Monday, wasting precious minutes in the countdown.

Launch controllers repeatedly halted the fueling operation of NASA's new Artemis 1 moon rocket on Monday, wasting precious minutes in the countdown.

It was already nearly an hour late due to thunderstorms off the coast of Florida's Kennedy Space Center.

It was already nearly an hour late due to thunderstorms off the coast of Florida's Kennedy Space Center.

Then a leak reappeared in the same location where there was seepage during a dress rehearsal in the spring.

Then a leak reappeared in the same location where there was seepage during a dress rehearsal in the spring.

According to NASA's assistant launch director, controllers finally managed to reduce the leak to a safe and acceptable level.

It remained there as nearly 1 million gallons of super-cold fuel filled the core stage's tanks.

It remained there as nearly 1 million gallons of super-cold fuel filled the core stage's tanks.

NASA has only two hours to launch the 322-foot rocket with an empty crew capsule bound for lunar orbit on its first test flight.

NASA has only two hours to launch the 322-foot rocket with an empty crew capsule bound for lunar orbit on its first test flight.

What will Artemis I do? 

What will Artemis I do? 

The mission will send an unmanned capsule around the moon for 42 days before splashing down in the Pacific Ocean.

The mission will send an unmanned capsule around the moon for 42 days before splashing down in the Pacific Ocean.

Artemis The primary goal of I is to test a new heat shield as it reenters the Earth's atmosphere at 25,000 mph.

Artemis The primary goal of I is to test a new heat shield as it reenters the Earth's atmosphere at 25,000 mph.

The operation will launch the first of the Space Launch Systems program. 

The operation will launch the first of the Space Launch Systems program. 

The operation will launch the first of the Space Launch Systems program. 

The operation will launch the first of the Space Launch Systems program. 

The giant SLS rocket is years behind schedule and billions of dollars over budget.

According to watchdog groups, each launch will cost taxpayers $4.1 billion.

According to watchdog groups, each launch will cost taxpayers $4.1 billion.