Overview
A recent paper co‑authored by astrophysicist Avi Loeb and postdoctoral researcher Richard Cloete reports the identification of two meteors—one observed in 2022 and another in 2025—that appear to have originated outside the Solar System. The analysis, posted on the pre‑print server arXiv, relies on measurements from the U.S. government’s space‑based sensor network, which are publicly catalogued by NASA’s Center for Near‑Earth Object Studies (CNEOS). Within 24 hours of the paper’s release, the CNEOS fireball database was altered: the sign of the north‑south velocity component ( vy ) for the 2025 event was reversed, changing the calculated trajectory from an interstellar path to one bound to the Solar System. The modification was not announced by NASA, and the change was discovered only by comparing archived versions of the database.
Discovery of the Interstellar Candidates
Loeb’s team applied a detailed statistical model that calibrates the uncertainties in the CNEOS catalog against independent ground‑based observations. Their methodology, described in the pre‑print (arXiv:2602.08956), identified two fireballs whose inbound velocities exceed the Solar System escape speed after accounting for measurement errors. The 2025 event, recorded on 15 May 2025, originally listed a vy of +12.3 km s⁻¹; combined with the east‑west component, this yielded a hyperbolic excess velocity of roughly 30 km s⁻¹, a signature consistent with an interstellar origin.
The authors argue that the detection is “statistically robust,” noting that the probability of the observed speed arising from a bound Solar System orbit is less than 0.1 % after their uncertainty analysis. Their findings were shared on both the arXiv and a popular science article on Medium, drawing attention from the broader scientific community and the public.
NASA’s Unannounced Data Revision
According to the Medium post, the CNEOS entry for the 2025 fireball was updated the day after the pre‑print went live. The revision changed vy from +12.3 km s⁻¹ to –12.3 km s⁻¹, effectively flipping the trajectory to a bound, solar‑orbiting path. Loeb’s team detected the alteration by consulting the Internet Archive’s Wayback Machine, which preserved the original database snapshot.
NASA has not issued a public statement explaining the correction. In a standard data‑maintenance practice, the agency occasionally revises entries when new information becomes available, but such changes are typically logged and communicated. The lack of documentation in this case has prompted questions about the transparency of the CNEOS data‑handling process, especially given the sensitivity of interstellar object claims.
Editorial Response and Claims of Harassment
The same paper that highlighted the 2025 candidate was submitted to a leading astrophysics journal. The associate editor declined to send the manuscript for peer review, writing, “I believe that your work would be of rather limited interest to the astrophysics research community as a whole.” Loeb interprets the decision as “academic harassment,” arguing that the editor used editorial authority to suppress a scientific claim without seeking independent expert review. The editor’s refusal follows two earlier rejections of Loeb‑co‑authored papers on the interstellar object 3I/ATL, suggesting a pattern of gatekeeping.
While editorial discretion is a normal part of the peer‑review process, the language cited by Loeb raises concerns about potential bias against unconventional findings. The scientific community generally expects that manuscripts presenting novel data be evaluated on methodological merit, irrespective of how surprising the results may be.
Broader Implications
The episode underscores several ongoing challenges in the study of interstellar meteors. First, it highlights the reliance on a single, government‑controlled dataset for high‑energy atmospheric events, and the difficulty of independently verifying those measurements. Second, it brings to the fore the importance of transparent data‑versioning practices; without clear change logs, researchers cannot easily track revisions that may affect scientific conclusions.
Finally, the incident fuels a broader debate about how journals handle controversial claims. Advocates for open science argue that pre‑print servers and post‑publication peer review can complement traditional journals, ensuring that potentially groundbreaking observations receive scrutiny rather than premature dismissal. As the community awaits further clarification from NASA and the journal in question, the case serves as a reminder that rigorous, reproducible analysis—and open communication of data changes—are essential for maintaining confidence in emerging fields such as interstellar object research.
