How British Files Recorded Eritrea's UFO Reports

Introduction

British archival records provide the main documentary trail for Eritrea’s historical UFO reports. The most significant surviving case is a 1950 sighting over Asmara, then under British administration, where officials, meteorological staff and witnesses exchanged reports about unusual objects in the sky. The files do not confirm an extraordinary explanation, but they show a genuine administrative investigation into an unexplained aerial observation. The importance of the archive is therefore not that it proves unidentified objects were unknown technology or extraterrestrial craft; rather, it preserves how colonial officials recorded, tested and debated unusual reports using the information and scientific tools available at the time.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

Unlike countries with later dedicated UFO programmes, Eritrea has little publicly accessible modern material from national institutions on unidentified aerial phenomena. The surviving evidence is largely found through British government collections, especially records preserved by the UK National Archives. These documents place Eritrea within a wider history of official UFO reporting, where authorities usually treated sightings as questions of identification, defence relevance and public administration rather than as proof of extraordinary causes.[The National Archives]nationalarchives.gov.ukThe National Archives UFOsThe National ArchivesUFOs - The National Archives…

Colonial administration records reveal the Asmara investigation

A British-era file built around witness reports

The key Eritrean archive case concerns observations made over Asmara on 6 April 1950. The National Archives’ historical presentation of the material describes reports of “silvery” or disc-shaped objects observed by many people in the city, with the Air Ministry Meteorological Station at Asmara airport involved in attempts to determine their height, speed and possible identity. The correspondence was preserved among British administrative records rather than in a modern UFO database.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

The file shows a process typical of official investigations of the period. Initial reports were collected, technical explanations were proposed, and local officials compared those explanations against what witnesses had actually seen. The objects were not immediately accepted as unusual craft; instead, officials considered whether they could have been balloons, military equipment, astronomical objects or other known phenomena.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

This makes the Eritrean record valuable as a historical dataset. It captures not only the sighting itself but also the administrative response: who reported it, which departments examined it, what explanations were available, and why some possibilities were rejected or remained uncertain.

Meteorological and military explanations were tested

A major part of the investigation involved the possibility that the objects were radar-calibration spheres or balloon-borne equipment. The Air Ministry Meteorological Office considered whether silvered spheres used for atmospheric or military purposes could explain at least part of the sighting. Such explanations reflected the technology and military environment of the post-war period, when balloons and observation equipment were common tools.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

However, the surviving correspondence also records disagreement. Some officials questioned whether the proposed balloon explanation matched the reported movements, especially descriptions of an object appearing to move erratically or remain visible for an extended period. British Administration officials in Eritrea argued that some aspects of the observation did not fit the suggested explanation and noted that one object remained unaccounted for.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

The disagreement is one reason the file remains significant. It was not simply a report filed away as a curiosity; it demonstrates the uncertainty involved when officials tried to interpret observations without modern tracking systems, digital imagery or multiple independent sensors.

Investigations and official responses show the limits of colonial records

The archive records uncertainty, not confirmation

The Asmara case is best understood as an unresolved historical observation. British officials investigated it, but the records do not establish that the objects represented technology beyond known human capabilities. The evidence consists mainly of written descriptions, witness testimony and official correspondence. It lacks the types of measurements that would allow a modern scientific identification, such as radar recordings, calibrated photography or detailed flight-path data.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

This distinction matters because the term “UFO” in government records generally meant an object that could not be identified at the time, not necessarily a vehicle from outside Earth. The UK National Archives explains that official UFO records include reports of objects that were later explained through causes such as aircraft, balloons, planets or other ordinary phenomena.[The National Archives]nationalarchives.gov.ukThe National Archives UFOsThe National ArchivesUFOs - The National Archives…

For Eritrea, the archive therefore provides evidence of an investigation rather than evidence of a confirmed phenomenon. The historical question is not simply “what was the object?” but also “how did officials handle uncertainty in a colonial administrative setting?”

Why British files became the main record of Eritrea’s UFO history

The survival of Eritrea-related UFO material through British archives reflects the political history of the territory. During the period when the Asmara sighting occurred, administrative communication, military reporting and technical investigations were handled through British structures. As a result, the documentary record followed British governmental channels.

The UK National Archives holds a broad collection of UFO-related government material, including correspondence, reports and policy records transferred from departments such as the Ministry of Defence. Its UFO collections show how British authorities preserved records where sightings generated official interest, especially when questions involved aviation, security or public concern.[The National Archives]nationalarchives.gov.ukThe National Archives UFOsThe National ArchivesUFOs - The National Archives…

For Eritrea, this creates an unusual archival situation: the most detailed surviving record of a local aerial mystery is not primarily found in Eritrean collections but in former administrative records held overseas.

Limits of surviving documents shape what can be concluded

Missing records and incomplete context

The British archive provides a rare window into Eritrea’s UFO history, but it is not a complete catalogue of all sightings. Many historical observations were never formally reported, and administrative files often preserve only the information considered relevant to officials at the time. The absence of a record does not necessarily mean the absence of a sighting.

There are also limits in reconstructing the original event. The surviving documents show how officials interpreted witness accounts, but they cannot recreate the exact viewing conditions. Factors such as altitude estimation, distance judgement, atmospheric effects and unfamiliarity with aircraft or astronomical objects could influence descriptions.

A historical case study rather than a solved mystery

The Asmara documents remain important because they show a real investigation into an unusual report, not because they provide a definitive answer. They demonstrate how British officials balanced witness testimony against technical explanations and how colonial administrations recorded uncertainty.

The wider lesson from the Eritrean archive is that UFO records are often most useful as historical documents. They reveal patterns of communication, scientific assumptions and institutional decision-making. In the Eritrean case, the surviving British files preserve the process of investigation itself: a moment when officials attempted to explain an unusual sighting with the evidence available, while acknowledging that some details remained unresolved.[National Archives]media.nationalarchives.gov.ukNational ArchivesThe Truth is in Here: UFOs at The National Archives | The National ArchivesOctober 8, 2009…Published: October 8, 2009

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Endnotes

1. Source: archives.gov
Link:https://www.archives.gov/research/topics/uaps/presidential-libraries

Published: January 30, 2026

2. Source: archives.gov
Link:https://www.archives.gov/research/topics/uaps/rg-collections

Published: December 12, 2025

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Link:https://www.archives.gov/research/topics/uaps/publications

Published: April 24, 2025

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Link:https://www.archives.gov/research/topics/uaps/moving-images-and-sound

Published: April 24, 2025

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Link:https://www.archives.gov/research/topics/uaps/photographs

Published: April 24, 2025

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Title: aliens at the archives
Link:https://unwritten-record.blogs.archives.gov/2017/04/26/aliens-at-the-archives/

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Title: Project BLUE BOOK
Link:https://www.archives.gov/foia/ufos.html

8. Source: media.nationalarchives.gov.uk
Link:https://media.nationalarchives.gov.uk/index.php/the-truth-is-in-here-ufos-at-the-national-archives/

Published: October 8, 2009

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Title: The National Archives UFOs
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Title: The National Archives UFO reports
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Title: nationalarchives.gov.uk The Cold War and UFOs | The National Archives
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12. Source: media.nationalarchives.gov.uk
Link:https://media.nationalarchives.gov.uk/index.php/ufo-files-national-archives/

13. Source: GOV.UK
Title: www.gov.uk UF O files
Link:https://www.gov.uk/government/publications/ufo-files

14. Source: media.nationalarchives.gov.uk
Title: nationalarchives.gov.ukufos Archives
Link:https://media.nationalarchives.gov.uk/index.php/tag/ufos/

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Link:https://www.nationalarchives.gov.uk/search/results/?_q=UFO

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Title: nationalarchives.gov.ukministry of defence Archives
Link:https://media.nationalarchives.gov.uk/index.php/tag/ministry-of-defence/

Additional References

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Title: uk British Administration, Eritrea
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