NASA will not conduct another fueling and countdown test of its moon rocket, the agency said Thursday.

Instead, it will repair a hydrogen leak, then roll it back to the  launchpad at the Kennedy Space Center in Florida in late August for its  first launch attempt.

NASA got most of the way through the test, known as a “wet dress  rehearsal,” this week, fully fueling the Space Launch System rocket’s  two stages with more than 700,000 gallons of liquid oxygen and liquid  hydrogen.

But the simulated countdown was cut short with 29 seconds to go because of a hydrogen leak.

Still, NASA was pleased with the results. “It was a great day,” Charlie  Blackwell-Thompson, the Artemis launch director, told reporters after  the test.

“It was a very successful day, and we accomplished a majority of the objectives that we had not completed in the prior” tests.

After the test this week, NASA officials said they were unsure whether they would need to do it again — which would have marked the fifth attempt.

But on Thursday, they said they have enough data to proceed with the  first-ever launch attempt of the massive SLS rocket that the agency  plans to use to return astronauts to the moon.

“NASA has reviewed the data from the rehearsal and determined the testing campaign is complete,” the agency said in a statement.

The agency would roll the rocket and the Orion crew capsule back into  the assembly building, repair the leak and prepare the rocket and  spacecraft for launch.

“NASA will set a specific target launch date after replacing hardware  associated with the leak,” the agency said in the statement.