Both flagship 2025 YDIH papers — the Baffin Bay cometary-dust study and the shocked-quartz study — were retracted by PLOS ONE on 11 February 2026 for chronology, sampling, and identification defects, and the influential 2017 North American platinum paper was formally corrected in May 2026 to withdraw its extraterrestrial-source conclusion.

Formal journal editorial actions verified directly against the publishers' notices, including the retraction reasons, the recorded author dissent, and the correction's exact language changes.

The 2026 editorial actions regarding the flagship YDIH papers are established. The retractions and corrections are verifiable facts in the editorial record, explicitly citing chronological errors, proxy misidentifications, and unsubstantiated sourcing. The strongest opposing consideration is that editorial retractions are not direct proof of absence for an ancient event and do not allege fabrication, but they definitively remove crucial recent pillars of the hypothesis from the reliable literature.

The PLOS ONE retraction notices for the 2025 Baffin Bay and shocked quartz papers explicitly list chronology, sampling, and identification defects, and document the editorial decision to retract both on 11 February 2026 (YDIH‑E034, E035). Scientific Reports’ 2026 correction to the platinum paper unambiguously withdraws its extraterrestrial‑source conclusion while leaving the measurements intact (YDIH‑E003). These actions are directly evidenced in journal records and were verified in the case file. The strongest opposing consideration is that several authors disagreed with the retractions and that the underlying physical hypotheses could, in principle, be rehabilitated by future, methodologically sound work, but that does not alter the accuracy of the claim about the current editorial status and its reasons.

PLOS ONE retracted both 2025 flagship papers on 11 February 2026 for chronology, sampling, identification, and citation defects, including calibration that moved a claimed layer out of the Younger Dryas and spherule fragments identified as foraminifera; Scientific Reports published the Moore and colleagues correction on 6 May 2026 withdrawing the extraterrestrial-source conclusion. These are formal editorial actions with published notices. The strongest opposing consideration is that several authors disagreed with both retractions and that retraction is evidence about papers rather than about the Pleistocene. The notices document error and misidentification, not fabrication, and they subtract claimed confirmations without proving no event occurred.

Formal editorial actions with published notices, fetched and read directly from the journals: both 2025 flagship papers retracted on 11 February 2026 with detailed defect lists (calibration that moves the Baffin Bay layer out of the Younger Dryas, spherule fragments identified as foraminifera, unsampled core sections precluding background comparison, untraceable dates), and the 2017 platinum paper corrected on 6 May 2026 to withdraw the extraterrestrial-source conclusion. Strongest opposing consideration: the notices document error and misidentification, not fabrication, several authors formally dissented, and retraction is evidence about papers rather than the Pleistocene — all of which the claim as stated already incorporates, so its established status is unaffected and its moderate diagnosticity is correctly calibrated.

These are formal, published editorial actions — two PLOS ONE retraction notices dated 11 February 2026 and a Scientific Reports correction dated 6 May 2026 — whose texts were fetched and read, with the stated grounds, author dissent, and language changes all matters of public record. The claim asserts the actions and their stated reasons, not any conclusion about the Pleistocene. The strongest opposing consideration is against overreading in either direction: the notices document error, misidentification, and sampling and chronology defects, make no finding of fabrication, and were formally disputed by most responding authors — while that dissent does not restore the papers' evidentiary standing. Retractions subtract claimed confirmations; they do not prove a negative.

Formal editorial actions verified against the publishers' own notices (YDIH-E034, YDIH-E035, YDIH-E003), including the stated retraction grounds, recorded author dissent, and the correction's exact language changes.

The two 11 February 2026 retractions and the May 2026 correction are verifiable editorial actions quoted from the publishers' own notices (YDIH-E034, YDIH-E035, YDIH-E003), including stated grounds, recorded author dissent, and the exact conclusion language withdrawn. Established as to the publication record; it documents error and method, not fabrication, and says nothing directly about the Pleistocene.

The two 11 February 2026 retractions and the May 2026 correction are verifiable editorial actions quoted from the publishers' own notices (YDIH-E034, YDIH-E035, YDIH-E003), including stated grounds, recorded author dissent, and the exact conclusion language withdrawn. Established as to the publication record; it documents error and method, not fabrication, and says nothing directly about the Pleistocene.

The two 11 February 2026 retractions and the May 2026 correction are verifiable editorial actions quoted from the publishers' own notices (YDIH-E034, YDIH-E035, YDIH-E003), including stated grounds, recorded author dissent, and the exact conclusion language withdrawn. Established as to the publication record; it documents error and method, not fabrication, and says nothing directly about the Pleistocene.

The two 11 February 2026 retractions and the May 2026 correction are verifiable editorial actions quoted from the publishers' own notices (YDIH-E034, YDIH-E035, YDIH-E003), including stated grounds, recorded author dissent, and the exact conclusion language withdrawn. Established as to the publication record; it documents error and method, not fabrication, and says nothing directly about the Pleistocene.

The two 11 February 2026 retractions and the May 2026 correction are verifiable editorial actions quoted from the publishers' own notices (YDIH-E034, YDIH-E035, YDIH-E003), including stated grounds, recorded author dissent, and the exact conclusion language withdrawn. Established as to the publication record; it documents error and method, not fabrication, and says nothing directly about the Pleistocene.

These are formal journal editorial actions with published notices, verified directly against PLOS ONE and Scientific Reports for this case. The retraction reasons, the authors' recorded disagreement, and the correction's exact language changes are all matters of public record.

PLOS ONE formally retracted both 2025 flagship papers on 11 February 2026 due to unresolved flaws in radiocarbon age models, missing background sampling, foraminifera misidentified as spherules, and improper citation practices. Additionally, the authors of the 2017 North American platinum study published a formal correction in May 2026 explicitly withdrawing their conclusion of an extraterrestrial impact source. The strongest opposing consideration is that eight to nine authors on each retracted paper formally recorded their dissent, arguing that the editorial conclusions were unwarranted.

Both retraction notices (e0342613, e0342620) and the Scientific Reports correction were fetched and read directly: the PLOS ONE editors retracted both flagship 2025 papers on 2026-02-11 over chronology, sampling, and identification defects, and the May 2026 correction formally withdrew the 2017 platinum paper's extraterrestrial-source conclusion. The strongest opposing consideration is that retraction documents error, not fabrication, and eight to nine authors dissented in each case — but the editorial actions themselves, and their dates and content, are not in dispute.

YDIH-E034 and YDIH-E035 are the formal PLOS ONE notices documenting the two retractions on 11 February 2026 and specifying their chronology, sampling, citation, and identification defects. YDIH-E003 is the formal May 2026 correction withdrawing the extraterrestrial-source conclusion while retaining the platinum measurements. The strongest opposing consideration is that many authors disputed the retractions and that editorial actions do not establish what happened in the Pleistocene, but neither point contests the historical claim that the actions occurred.

PLOS ONE retraction notices of 11 February 2026 document chronology, sampling, calibration, and particle-misidentification defects that invalidate both 2025 flagship papers; the May 2026 Scientific Reports correction explicitly withdraws the extraterrestrial-source conclusion of the 2017 North American platinum study. Strongest opposing consideration is that retraction removes support without proving the underlying event impossible, yet the defects match long-standing independent critiques.

The PLOS ONE notices, read in full, record both retractions on 11 February 2026 (E034, E035). The Scientific Reports correction of 6 May 2026 replaces the original's extraterrestrial characterization with source-neutral language. It also rewrites the conclusion to say the enrichments do not independently resolve the ultimate source (E003). Two details are compressed in the claim. Identification defects (foraminifera taken for spherule fragments) appear in the Baffin Bay notice, while the shocked-quartz notice cites chronology and sampling. And the correction withdraws the extraterrestrial conclusion by neutralizing it rather than by asserting a terrestrial source. Strongest opposing consideration, which bears on implications rather than facts: retractions are evidence about papers, not about the Pleistocene; they remove claimed support without demonstrating the event's absence.

These are formal journal editorial actions with published notices, verified directly against PLOS ONE and Scientific Reports for this case. The retraction reasons, the authors' recorded disagreement, and the correction's exact language changes are all matters of public record.