Explanation Library
An educational index of conventional explanations for unusual sky reports — re-entries, satellite trains, Venus, Fata Morgana, lens artefacts and more — each linked to the archive files that record it as a candidate.
- Page type
- identification guide
- Investigation status
- archival reference
- Record depth
- developed record
- Evidence basis
- not applicable
- Last reviewed
- 2026-08-06
Mystery Files preserves unusual reports as historical, astronomical and cultural records. Unexplained does not constitute proof of an extraordinary cause.
This page needs JavaScript for the full interactive archive. Text index: all archive records.