Right now, as you read this, a 322-foot rocket is sitting on Launch Pad 39B at Kennedy Space Center, loaded with the dreams of four astronauts and 700,000 gallons of cryogenic propellant. NASA's second wet dress rehearsal for Artemis II is underway today, February 19, with a simulated launch window opening at 8:30 p.m. EST. If this test goes clean, we get a launch date. If it doesn't, we learn something. Either way, we are going back to the Moon.
The first wet dress rehearsal on February 2 ended early. A liquid hydrogen leak spiked at the T-minus 5 minute 15 second mark and the ground launch sequencer killed the countdown. Engineers traced the problem to a filter in the tail service mast umbilical, replaced seals, ran confidence tests, and got back to work. This is what engineering looks like. Not perfection. Iteration.
What the Mission Actually Is (and Why It Matters)
Artemis II will carry NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen, on a 10-day free-return trajectory around the Moon. Victor Glover will become the first person of color, Christina Koch the first woman, and Jeremy Hansen the first non-American to leave Earth orbit and travel around the Moon. The crew will fly farther from Earth than any humans in history, breaking the distance record set by Apollo 13 in 1970, and reenter the atmosphere at approximately 25,000 miles per hour.
Read that again. Fifty-three years since Apollo 17. More than half a century. And now four people are going to strap into a capsule on top of 8.8 million pounds of thrust and loop behind the far side of the Moon where no radio signal can reach them.
Rockets are just controlled explosions with ambition. But this one carries something no explosion ever could: proof that we did not give up.
The Delay Is the Process
The launch was originally targeting February 2026. A January winter storm delayed preparations. Then the hydrogen leak during wet dress rehearsal number one pushed everything to March. NASA Administrator Jared Isaacman has stated that an actual launch date will only be confirmed after a successful wet dress rehearsal and data review. The earliest window now opens March 6, with additional dates through March 11 and backup windows in early April.
Here is what the cynics miss: hydrogen leaks are not new. They plagued Artemis I too. NASA returned the SLS to the Vehicle Assembly Building twice in 2022 before that mission flew. Liquid hydrogen is the lightest element in the universe. It passes through solid metal by diffusing through atomic lattices. Its boiling point is minus 423 degrees Fahrenheit. Working with it is not a sign of incompetence. It is a sign that you are doing something extraordinarily hard.
The engineers at Kennedy Space Center replaced seals, swapped a ground support equipment filter, conducted a confidence check, and lined up a second full rehearsal in under three weeks. That is not delay. That is speed.
The Elephant on the Launch Pad
Now here is where I have to be honest, because technical honesty is not optional.
NASA's Inspector General has estimated the Artemis program will cost approximately $93 billion through fiscal year 2025. Each SLS launch runs about $4.1 billion. The SLS is expendable. Every single component, except the Orion capsule, is destroyed on each flight. Meanwhile, a SpaceX Falcon 9 launch costs roughly $67 million with a reusable first stage, translating to about $1,400 per kilogram to low Earth orbit. Starship, once fully reusable, is targeting costs that could eventually fall below $100 per kilogram.
The SLS can lift 95 metric tons to low Earth orbit. That is impressive. But Starship is designed to carry 150 metric tons with full reusability. SpaceX conducts Falcon 9 missions weekly. NASA will be lucky to fly SLS once a year. The Trump administration's fiscal year 2026 budget proposal even suggested canceling SLS and Orion after Artemis III, citing the $4 billion per launch price tag. Congress stepped in with the One Big Beautiful Bill Act to keep the program alive, but the writing is visible from orbit.
Artemis II matters because it proves the Orion spacecraft can keep humans alive beyond low Earth orbit. It validates the heat shield, the life support, the navigation, the communications blackout behind the Moon. These are capabilities no private company has yet demonstrated with crew. Artemis III, now expected no earlier than 2028, will attempt the first crewed lunar landing since 1972, using a SpaceX Starship as the lander. Even NASA's own architecture is already hybrid: government rocket up, private rocket down.
Vera Santos would tell you to spend that $93 billion on climate infrastructure. And she is not wrong that Earth needs investment. But the technologies born from programs like Artemis, from thermal protection to water purification to radiation shielding, flow directly into solving problems on the ground. The CubeSats riding along on this mission include experiments studying radiation dosimetry and space weather from Argentina, South Korea, and Saudi Arabia. Reaching for the Moon is part of how we understand and protect this planet.
The real lesson of Artemis is not that government space programs are obsolete. It is that they are transitional. SLS exists because when it was designed in 2011, nothing like Starship was possible. Today, SpaceX has conducted more than 300 Falcon 9 launches. The Starship booster has been caught by its launch tower. The economics of access to space have fundamentally shifted. Artemis II is the bridge. Respect the bridge while you cross it.
So yes, the hydrogen is leaking. The schedule has slipped. The costs are staggering. And sometime this spring, four human beings are going to see the far side of the Moon with their own eyes for the first time in over half a century. The ground teams at Kennedy Space Center, the engineers at Michoud Assembly Facility, the mission controllers in Houston who have rehearsed every failure mode: they built this moment.
This is the future and it is happening now. Not cleanly. Not cheaply. But it is happening. We are going. The only question is when. And right now, the answer looks like March.
