NASA fuels up giant Artemis 2 moon rocket. Yes, it’s a little leaky. So is it ready to fly?

NASA fuels up giant Artemis 2 moon rocket. Yes, it’s a little leaky. So is it ready to fly?

February 3, 2026 discoverhiddenusacom Business

NASA is assessing the readiness of its Space Launch System (SLS) rocket following a fueling test conducted today, February 2, at Kennedy Space Center in Florida. The test, a critical step in preparations for the Artemis 2 mission, involved loading over 700,000 gallons (2.65 million liters) of liquid hydrogen and liquid oxygen into the two-stage vehicle.

Preparing for Crewed Lunar Missions

The Artemis 2 mission is currently targeted for liftoff on February 8. This mission will carry NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Canadian astronaut Jeremy Hansen, on a 10-day journey around the moon. Successful completion of today’s “wet dress rehearsal” – a full run-through of launch operations – is a key requirement for the February 8 launch date.

Addressing Technical Challenges

During the fueling process, teams encountered leaks while loading liquid hydrogen into the SLS core stage. These leaks required temporary halts to the operation, but were addressed and the tanks were successfully topped off. NASA will assess the results of the wet dress rehearsal, which may continue until 1 a.m. EST (0600 GMT) on Tuesday, February 3.

Did You Know? The Artemis 1 mission, the first in the Artemis programme, was originally scheduled to launch in the spring of 2022 but ultimately launched on November 16 of that year.

The challenges encountered today are not unprecedented. Liquid hydrogen, due to its molecular size, is prone to leaking through even minute imperfections. Similar leaks impacted the Artemis 1 launch campaign, resulting in repeated delays.

Building on Past Successes

Despite the delays, Artemis 1 successfully demonstrated the capabilities of the Orion capsule and the SLS hardware, completing an uncrewed orbit of the moon and returning safely to Earth. NASA is applying lessons learned from Artemis 1 to Artemis 2 and subsequent missions. The leaks observed today occurred at an interface with the tail service mast umbilical, a component that carries propellant to the rocket, mirroring issues experienced during the Artemis 1 campaign.

Expert Insight: The recurring nature of these leaks, while presenting logistical challenges, also demonstrates NASA’s increasing understanding of the system and its vulnerabilities. The ability to quickly troubleshoot and resume operations suggests a maturing process and a commitment to addressing these issues proactively.

A press conference is scheduled for Tuesday at 12 p.m. EST (1700 GMT) to provide an update on the wet dress rehearsal.

Frequently Asked Questions

What is the Artemis 2 mission?

Artemis 2 will send NASA astronauts Reid Wiseman, Victor Glover and Christina Koch and Canada’s Jeremy Hansen on a 10-day trip around the moon.

What is a “wet dress rehearsal”?

A wet dress rehearsal is a two-day-long practice run through all the operations that will precede an actual launch, including fueling the rocket.

What caused the delays during today’s fueling test?

Teams had to stop loading liquid hydrogen into the SLS core stage twice to deal with leaks, but they managed to troubleshoot the issue and top up the rocket’s tanks.

As NASA continues to refine its procedures and address technical hurdles, what impact might these experiences have on the long-term cost and timeline of the Artemis programme?