Phan, Hoang and Loeb model erosion and modification of icy interstellar objects under assumed cosmic-ray, material and travel conditions. Prior observations and fits support theoretical predictions rather than new detections or demonstrated composition.
Complete supplied seven-page manuscript; conditional erosion modelSiraj and Loeb assess whether nitrogen-ice fragments could account for the earlier Oumuamua detection. Their conclusion depends on population and mass-budget assumptions; no new data are generated or analyzed.
Complete supplied three-page manuscript; conditional mass-budget modelSiraj and Loeb infer a potentially large interstellar population from prior observations and population assumptions. The paper introduces no new data; selection, size distributions and model sensitivity limit its abundance estimates.
Complete supplied four-page manuscript; conditional abundance modelTabor and Loeb forecast detectability of hypothetical artificial illumination on Proxima b. This is not a detection. The paper acknowledges an estimated instrument noise floor ten times its predicted signal.
Supplied preprint text and native layouts; conditional modelSiraj and Loeb forecast interstellar-object velocity and direction distributions from conventional stellar ejection. Their estimates distinguish 12-object velocity and 180-object angular tests of two ejection models from a separate 12-object anisotropy test. Density, size, sampling and detection assumptions remain uncertain. White-dwarf, outer-cloud and interstellar-medium alternatives are retained. Discovery forecasts and an artifact conjecture are not observations. Manuscript comments and work-level grant support do not establish government access.
Received written text and native layouts; originals and interpretation gapsHoang and Loeb model destruction and formation of pure hydrogen ice under assumed radiation, material and cloud conditions. They challenge one proposed explanation of Oumuamua while retaining environmental exceptions; no hydrogen object is observed and no artificial origin is established.
Complete supplied eight-page manuscript; conditional hydrogen-ice modelHoang and Loeb model thermal emission from hypothetical fast objects heated by gas collisions and radiation. Natural objects can share the same heating signature. Calculated curves and dated telescope sensitivities are conditional forecasts, not detections or measured abundance. Rapid motion reduces integration time and sensitivity unless tracking is achieved. Native equation, figure-count and size-threshold differences remain unresolved. Funding is attributed at work level without a named recipient or Starshot earmark.
All four supplied preprint pages and native layouts; model discrepancies and original gapsSiraj and Loeb model hypothetical fast natural meteors and propose observational searches. A spacecraft analogy is speculative. The paper establishes no detected object, artificial origin, material test, deployed network or classified sensor access. Its network citation depends on their earlier paper.
Supplied preprint text and native layouts; model and original gapsSiraj and Loeb propose stellar occultations as a way to find conventional interstellar objects. An idealized all-sky forecast of about one annual event depends on population, size, noise and observing assumptions. Bound Kuiper-belt and Oort-cloud populations are ordinary alternatives, with overlapping timescales. Metadata, citation, figure, axis and model discrepancies remain unresolved. This supplied preprint reports forecasts rather than detections; work-level grant support does not establish government access.
Received written text and native layouts; originals and interpretation gapsSiraj and Loeb argue that a roughly kilometer-scale Borisov nucleus better matches an assumed ordinary Oort-cloud mass budget. An eight-kilometer alternative produces substantial tension with that benchmark, without independently disproving the larger size. Their figure uses four points for three object families, including two alternative Borisov radii. Sparse Poisson bounds do not capture every observing or population uncertainty. This is a conditional argument using reported observations, not a new measurement campaign or artificial-origin finding.
Received written text and native layouts; originals and interpretation gapsThis JPL release attributes a 2–16 km comet diameter to Meech’s team, corresponding to the 1–8 km radius relayed in the Siraj–Loeb paper. It does not establish a unique size. Interstellar confirmation was pending when the release appeared; its forecasts are historical. Ordinary cometary appearance and public institutional collaboration are described.
Received publisher text; underlying originals remain gapsSiraj and Loeb combine reported detections and non-detection limits to propose meteor trajectory, spectroscopy and sample tests. The administrator flags substantial text overlap with their earlier meteor paper; IM1 and Oumuamua are reused. The allowed slope range is not a demonstrated confidence interval. Camera coverage, parent-star association, isotopes and sample recovery are forecasts, rather than achieved results. Ordinary alternatives and source discrepancies remain.
Received preprint text and native layouts; overlap and original gapsA curated public selection. Source review describes what was read; it does not establish that a claim is true. Our research approach