The proposition
The investigation asks whether impacts, airbursts, fragmented comets, or sustained dust encounters contribute to repeated environmental disruptions and whether relevant events cluster near proposed cycle boundaries.
What is established
Asteroids and comets can strike Earth and sufficiently large events can have global consequences. Smaller impacts and airbursts vary widely in effect and preservation.
| Claim class | Minimum requirement |
|---|---|
| Established Evidence | Original measurement, documented record, or primary text with a traceable citation. |
| Mainstream Interpretation | A fair account of the prevailing explanation and its limits. |
| Alternative Hypothesis | A stated mechanism and test that could distinguish the claim. |
| Author’s Analysis | Reasoning visibly marked as interpretation rather than source fact. |
What must be tested
Candidate layers require diagnostic geochemistry, reproducible stratigraphy, secure dating, exclusion of terrestrial processes, and an energy estimate consistent with the claimed outcome.
- Does the proposed cause precede the claimed effect within realistic uncertainty?
- Is the magnitude physically sufficient?
- Is the association reproduced in independent records?
- Would the model have predicted the evidence before it was observed?
Counterarguments and alternatives
Wildfire, volcanism, industrial contamination, sediment reworking, and statistical clustering can imitate or exaggerate impact signatures.
Source and revision status
Research outline only. Primary papers, datasets, translations, and archival documents have not yet been attached to every claim.
Review sources & corrections