Archive index

Investigations

Browse all dossiers in the archive. Each investigation compiles documented facts, supporting and contradicting evidence, open questions, and source references.

6 DOSSIERS

Showing 6 of 6 dossiersCategory: Signals & ScienceStatus: UNDER REVIEW
Signals & ScienceUNDER REVIEW

Wow! Signal

A strong, narrowband radio signal detected in 1977 by the Big Ear radio telescope, lasting 72 seconds and never detected again.

45 DOCUMENTS2 CONNECTIONSJun 23, 2026
Signals & ScienceUNDER REVIEW

Fast Radio Bursts

Brief, intense pulses of radio energy from distant galaxies, first detected in 2007, with origins still being investigated.

34 DOCUMENTS2 CONNECTIONSJun 23, 2026
Signals & ScienceUNDER REVIEW

Fermi Paradox

The contradiction between the high probability of extraterrestrial civilizations and the lack of evidence for or contact with such civilizations.

34 DOCUMENTS2 CONNECTIONSJun 23, 2026
Signals & ScienceUNDER REVIEW

Mandela Effect

A phenomenon where large groups of people remember events or facts differently from how they occurred, named after Nelson Mandela's supposed death in prison.

23 DOCUMENTS2 CONNECTIONSJun 23, 2026
Signals & ScienceUNDER REVIEW

Taos Hum

A persistent low-frequency humming sound reported by residents of Taos, New Mexico, since the early 1990s, with no confirmed source.

23 DOCUMENTS2 CONNECTIONSJun 23, 2026
Signals & ScienceUNDER REVIEW

Bloop

An ultra-low frequency underwater sound detected by NOAA in 1997, originating from a source larger than any known animal.

19 DOCUMENTS2 CONNECTIONSJun 23, 2026

Shadow Archive separates documented facts from claims, counterarguments, and open questions. It does not present unsupported allegations as confirmed fact.