NASA mission managers held their final status briefing ahead of the Artemis 2 splashdown, expressing confidence in the Orion spacecraft’s thermal protection system and outlining the sequence of events that will bring the four-person crew safely back to Earth.

The spacecraft is slated to hit the Earth’s atmosphere at approximately 40,233 kph (25,000 mph), initiating a critical sequence where the heat shield must withstand temperatures approaching those of the surface of the sun.

“Every system we’ve demonstrated over the past nine days—life support, navigation, propulsion, communications—all of it depends on the final minutes of flight,” said NASA Associate Administrator Amit Kshatriya. “The crew has done their part. Now we have to do ours.”

Splashdown timeline and reentry profile

Lead Flight Director Jeff Radigan provided a detailed timeline for Friday evening’s critical milestones (all times Central):

  • 6:33 p.m. CT: The Crew Module and Service Module will separate.
  • 6:53 p.m. CT: Orion enters the communication blackout period as plasma builds around the capsule.
  • 7:03 p.m. CT: Drogue parachutes deploy.
  • 7:04 p.m. CT: The three main parachutes deploy.
  • 7:07 p.m. CT: Splashdown in the Pacific Ocean off the coast of San Diego.

Radigan emphasized the precision required for the reentry interface, noting the capsule has less than a degree of margin for its flight path angle. Orion will execute a modified “skip entry” profile, though the lofted duration has been shortened for this specific flight to tightly control the heat load and downrange weather tracking.

When asked about the “13 minutes of terror” from entry interface to splashdown, Radigan expanded the scope of the operations. “It’s not so much 13 minutes. It’s more in my head about an hour and a half of things that have to go right,” he said, citing the separation mechanisms, parachute reefing systems, and touchdown angle alignments.

Following splashdown, recovery forces deployed from Naval Base San Diego will require approximately 30 to 45 minutes to safely approach the capsule and extract the crew, allowing time for hazardous debris—such as the forward bay cover—to settle.

Clarifying the service module valve leak

Mission managers also clarified an in-flight anomaly related to a pressure leak that prompted timeline adjustments earlier in the week. The issue is a helium leak within the oxidizer pressurization system of the European Service Module’s propulsion system—not a breathable oxygen leak as previously speculated.

Officials stressed that the leak poses zero risk to the crew or the reentry sequence. Orion is currently performing its final trajectory correction burns in a “blowdown” mode, relying on existing pressure in the propellant tanks without needing the active helium pressurization system.

While not a flight safety issue for Artemis 2, the leak rate was an order of magnitude higher in space than during ground tests. Because the Service Module is jettisoned and burns up in the atmosphere, teams prioritized in-space troubleshooting to characterize the leak before losing the hardware. Kshatriya confirmed the data gathered will likely lead to an extensive valve redesign for the Artemis IV mission, which will require full system pressurization for lunar orbit insertion.

The human element

As the crew spends their final hours in space packing away equipment and securing the cabin, mission managers took a moment to reflect on the human aspect of the historic flight.

Reflecting on the emotional updates the crew has sent to their families throughout the journey, Kshatriya summarized the core justification for crewed exploration.

“If you can’t take love to the stars, then what are we doing?” he said. “That’s why we send humans instead of robots sometimes. That’s why we have that firsthand witness.”

Marc Boucher is an entrepreneur, writer, editor, podcaster and publisher. He is the founder of SpaceQ Media. Marc has 30+ years working in various roles in media, space sector not-for-profits, and internet content development.

Marc started his first Internet creator content business in 1992 and hasn't looked back. When not working Marc loves to explore Canada, the world and document nature through his photography.

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