AI Generated Image The clock is ticking toward history. At approximately 5 PM CST on Friday, February 20, 2026, the four astronauts who will fly around the Moon entered quarantine in Houston, beginning their final countdown to the March 6 launch window for Artemis II. NASA astronauts Reid Wiseman (commander), Victor Glover (pilot), Christina Koch (mission specialist), and Canadian Space Agency astronaut Jeremy Hansen (mission specialist) are now isolated from the outside world. The quarantine protocol, typically lasting around 14 days before launch, is designed to protect the crew from illness that could delay or jeopardize the mission. This is the final major milestone before the crew transfers to Kennedy Space Center, expected around five days before launch. When they lift off from Launch Pad 39B, they will become the first humans to venture beyond low Earth orbit in more than half a century. AI Generated Image 4 Crew Members ~10 Mission Days 6,400 Miles Beyond Far Side 54 Years Since Apollo 17 700K+ Gallons Propellant 14 Days Quarantine Wet Dress Rehearsal Clears Path to Launch The crew's quarantine entry follows NASA's successful completion of a second wet dress rehearsal on February 19. Engineers loaded more than 700,000 gallons of cryogenic liquid propellant into the Space Launch System rocket, a critical test that validates the fueling procedures that will be used on launch day. AI Generated Image The closeout crew demonstrated closing the Orion spacecraft hatches and completed two full runs of the terminal count, the final phase of the launch countdown. These rehearsals are essential for identifying any potential issues before the actual launch attempt. One key metric monitored during the test: hydrogen gas concentrations. Engineers installed new seals after Artemis I, and the WDR confirmed those upgrades are working. Hydrogen levels remained well below allowable limits throughout the fueling sequence. Hardware Milestone The second wet dress rehearsal validated critical systems after Artemis I upgrades. New hydrogen seals performed as designed, and ground teams completed full terminal count procedures twice without major issues. There was one anomaly: a temporary loss of ground communications in the Launch Control Center. The issue was resolved using backup communication methods, and engineers confirmed it poses no risk to the launch timeline. The redundancy systems performed exactly as intended. Final Ground Preparations Underway With the wet dress rehearsal complete, technicians are now setting up temporary access platforms on the mobile launcher to service and retest the flight termination system on the SLS solid rocket boosters. This is a lesson learned from Artemis I: by using temporary platforms at the pad, NASA avoids the expensive and time-consuming process of rolling the entire stack back to the Vehicle Assembly Building. AI Generated Image The closeout crew will also practice their procedures one more time before launch day. Every movement, every seal check, every switch position must be practiced until it becomes second nature. When the crew arrives at the pad on March 6, there will be no room for hesitation. Date Milestone Feb 19, 2026 Second wet dress rehearsal completed Feb 20, 2026 Crew enters quarantine in Houston Late Feb 2026 Flight termination system service/retest ~Mar 1, 2026 Crew transfers to Kennedy Space Center Mar 6, 2026 (NET) Artemis II Launch Breaking Barriers Beyond Low Earth Orbit Artemis II is not just a return to deep space. It's a step forward in who goes there. Christina Koch will become the first woman to fly beyond low Earth orbit. Victor Glover will be the first person of color to venture to the Moon. Jeremy Hansen will be the first Canadian to leave Earth orbit behind. AI Generated Image The mission profile calls for Orion to swing around the Moon, traveling approximately 6,400 miles beyond the lunar far side. The crew will not land, but they will test every system needed for future landings. Life support. Navigation. Communications from the far side where Earth disappears from view. Radiation exposure. Re-entry at lunar return velocities. This is a shakedown cruise for Artemis III, the landing mission. But it's also a mission in its own right. No crew has been this far from Earth since Eugene Cernan, Harrison Schmitt, and Ronald Evans flew Apollo 17 in December 1972. Meet the Artemis II Crew Reid Wiseman (Commander) - NASA astronaut, former ISS commander Victor Glover (Pilot) - NASA astronaut, Crew-1 pilot, first person of color to lunar distance Christina Koch (Mission Specialist) - NASA astronaut, former ISS record holder, first woman to lunar distance Jeremy Hansen (Mission Specialist) - CSA astronaut, first Canadian beyond Earth orbit The Road to Launch Day Over the next two weeks, the crew will remain in medical isolation. They'll review procedures, run simulations, and prepare mentally for the journey ahead. They'll say goodbye to family through glass windows and video calls. They'll watch the final preparations at Kennedy unfold from a distance. Around five days before launch, they'll fly to Florida. They'll walk the same corridors the Apollo astronauts walked. They'll suit up in the same building where Shuttle crews prepared. And when the day comes, they'll ride an elevator up the mobile launcher tower to a white room where technicians will seal them inside Orion. The stack is ready. The hardware has been tested. The ground systems are validated. The crew is entering their final phase of preparation. NASA is targeting no earlier than Friday, March 6, 2026 for launch. Weather, technical issues, and last-minute discoveries could push that date. But for now, the clock is ticking down. The Bottom Line After more than 50 years, humanity is returning to deep space. Four astronauts are now in quarantine, the rocket is fueled and ready, and the March 6 launch window is open. Artemis II isn't just a test flight. It's the first step in a new era of lunar exploration, crewed by a team that reflects the diversity of the world watching from below.