Archive index

Investigations

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

10 DOSSIERS

Showing 10 of 10 dossiersCategory: Signals & Science
Signals & ScienceUNCONFIRMED

Philadelphia Experiment

An alleged secret U.S. Navy experiment in 1943 that supposedly rendered the USS Eldridge invisible, with catastrophic consequences for the crew.

67 DOCUMENTS1 CONNECTIONSJun 23, 2026
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 & SciencePARTIALLY DECLASSIFIED

HAARP

The High-frequency Active Auroral Research Program, a real ionospheric research facility that has been the subject of numerous conspiracy theories.

45 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

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

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

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

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
Signals & ScienceUNCONFIRMED

Simulation Hypothesis

The theory that reality as we know it is a computer simulation, popularized by philosopher Nick Bostrom and discussed in scientific and philosophical contexts.

15 DOCUMENTS2 CONNECTIONSJun 23, 2026
Signals & ScienceUNCONFIRMED

Dark Forest Theory

A hypothesis from Liu Cixin's science fiction that explains the Fermi Paradox by proposing civilizations hide from each other to avoid destruction.

12 DOCUMENTS2 CONNECTIONSJun 23, 2026

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