NASA has not published Artemis II crew radiation dose data since the 10:30 PM EDT post-splashdown press conference on 11 April, the venue the agency's own public schedule identified as the first window for disclosure or deferral 1. The withheld record covers nine days of exposure, including a G3 ('strong' geomagnetic storm, Kp index 7 on a 0-9 scale) event on Day 4, an M7.5 solar flare on Day 9 , a 40-minute communications blackout at maximum distance, and G1-G2 storming on re-entry day . NOAA's real-time dose pipeline was operational throughout the mission; the data is not published.
Steve Platts, the NASA chief scientist for human research who signs off crew dose disclosure, did not appear at the post-splashdown podium and has not briefed since the crew came home. The gatekeeper for dose disclosure has been absent from every public forum since splashdown. NASA's stated policy is that the nine-day record will reach the scientific community through a research solicitation rather than an operational safety release, with no timeline committed.
This is the same Day 8 decision chain that cancelled the radiation shelter demonstration and surfaced only through an editor's note the following morning . The pattern on radiation is now consistent across the mission: the scheduled disclosure does not happen, the cancellation or deferral is communicated through a secondary channel, and the agency declines to commit a new date. The research-solicitation route matters because its pace is months, not days. A career dose limit breach, if one occurred, would remain unknown to anyone outside NASA until that process concludes.
The scheduled crew postflight press conference at 14:30 EDT on 16 April is the near-term lever 2. That venue is scheduled, on the public calendar, and unlike Platts the four astronauts will be in front of a live microphone. Whether anyone inside the room presses Reid Wiseman, Christina Koch, Jeremy Hansen, or Victor Glover on the figures they personally accumulated is now the only near-term lever.
