Here’s why NASA cancelled its Artemis 1 moon mission launch at the last moment: when will it launch now?

The Artemis 1 moon mission acts as a test flight and principle checks for future NASA moon missions.

Highlights
  • NASA’s August 29th Artemis 1 moon mission launch from the Kennedy Space Center was postponed. 
  • A leak in one of the four RS-25 engines of the spaceship caused this delay.
  • NASA will try to relaunch the Artemis 1 moon mission on September 2nd.

Update: NASA moved the Artemis 1 rocket relaunch date to September 3rd after bad weather spoiled plans for the initial September 2nd launch. 

Original story follows…

NASA Artemis 1 moon mission was supposed to take off on August 29th from the Kennedy Space Center in Cape Canaveral, Florida, but NASA had to call off the test flight to the moon. This happened because of a leak in one of the uncrewed spaceship’s four RS-25 engines, aiming to land on the moon in six weeks. NASA plans to attempt the Artemis 1 moon mission again on September 2nd.

The Artemis 1 moon mission’s delay started a night before the launch. A high risk of lightning briefly halted overnight efforts to fill the rocket with more than three million litres of ultra-cold liquid hydrogen and oxygen, but it got a ‘Go’ signal after an hour. Around 3:30 AM, a potential leak was witnessed when the main stage was filled with hydrogen, leading to another delay.

Forty minutes before the launch, a fault in the rocket’s main engine, RS-25, was discovered. NASA said they first became aware of the engine bleed when the launch team started putting liquid oxygen and hydrogen propellants in the rocket’s core fuel tanks.

The four RS-25 engines used during the rocket’s core stage had to be “conditioned” with cryogenic fuel to get them ready for launch. However, one of these engines failed to maintain the proper cooling temperature that NASA expected.

New NASA Artemis 1 moon mission launch date

NASA Artemis 1 moon mission

The Artemis 1 moon mission won’t include any humans onboard and will act as a test flight and principle checks for human-loaded Artemis 2 and Artemis 3, which will take the same route and land by 2025. The Artemis 1 moon mission rocket is stable now, and NASA will try to relaunch it on September 2nd.