Within Bulgaria UFO
How Do Bulgarian UFO Cases Gain Ordinary Explanations?
The Haskovo video shows how a genuine recording can be misidentified when satellite paths, timing and viewing conditions are not checked.
On this page
- The Haskovo video and the ISS match
- Common explanations for lights and shapes
- What evidence is needed for a stronger case
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Introduction
Most Bulgarian UFO reports are not resolved through dramatic discoveries but through ordinary investigative work. When enough information is available, investigators compare a sighting against satellite passes, astronomical objects, aircraft movements, weather conditions, camera behaviour and witness timing. The best-known modern example—the 2013 Haskovo video—illustrates how an apparently unusual recording can closely match the flight path and timing of the International Space Station (ISS). At the same time, many Bulgarian cases remain officially unresolved not because they demonstrate extraordinary technology, but because the original evidence is too limited for reliable testing. This distinction is central to understanding Bulgaria’s UFO record: an unexplained report is not necessarily evidence of an unknown phenomenon, and a convincing-looking video is not necessarily evidence of something extraordinary.[novinite.com]novinite.comBulgarian UFO Makes Headlines, Skeptics Reveal It as ISSSofia News AgencyAugust 13, 2013…
How Do Bulgarian UFO Cases Gain Ordinary Explanations?
Unlike countries that have maintained formal public investigation programmes, Bulgaria’s publicly accessible UFO record is dominated by eyewitness testimony, amateur videos and media reports. As a result, investigators usually begin with straightforward questions rather than exotic hypotheses.
A typical investigation asks:
- Was the exact date and time recorded?
- Which direction was the witness facing?
- What was the object’s apparent path across the sky?
- What were the weather and visibility conditions?
- Were satellites, aircraft or astronomical bodies visible at that time?
- Does the video contain the original file with metadata, or only a compressed online upload?
Each missing piece makes later verification more difficult. Modern scientific proposals for studying unidentified aerial phenomena emphasise that reliable conclusions require multiple independent measurements—such as calibrated cameras, triangulation, environmental sensors and, where available, radar—not simply eyewitness recollections or heavily compressed videos.[arXiv]arxiv.orgOpen source on arxiv.org.
The Haskovo Video and the ISS Match
The Haskovo incident remains Bulgaria’s clearest example of a widely publicised UFO claim receiving a strong conventional explanation.
In August 2013, a video filmed by Nedialko Kostadinov showed a bright object moving silently across the early morning sky above Haskovo. International media highlighted the footage because the object appeared to change brightness and colour while remaining difficult to identify. Even experienced television paranormal investigator Ben Hansen commented that the footage did not immediately resemble an obvious computer-generated fake, illustrating that an authentic recording is not the same thing as an authentic unidentified craft.[novinite.com]novinite.comBulgarian UFO Video Captures Attention of 'Fact or Faked' InvestigatorSofia News AgencyAugust 10, 2013…
The crucial development came when investigators compared the recording with publicly available satellite-tracking data. Alejandro Rojas noted that the International Space Station passed over Haskovo at essentially the same time recorded by the videographer. The video’s characteristics also matched a typical bright ISS pass:
- steady movement across the sky;
- changing apparent brightness caused by changing illumination geometry;
- colour shifts introduced by atmospheric conditions and digital zoom;
- complete absence of unusual manoeuvres once the camera movement is separated from the object’s own motion.
Rather than relying on speculation, the explanation depended on an independently verifiable astronomical event that anyone could check using archived satellite predictions. This transformed the discussion from “what does the video look like?” to “does it match an object known to be present at that exact place and time?”[novinite.com]novinite.comBulgarian UFO Makes Headlines, Skeptics Reveal It as ISSSofia News AgencyAugust 13, 2013…
The Haskovo case therefore demonstrates an important principle: a genuine recording can still depict an ordinary object that was initially misidentified.
Common Explanations for Bulgarian Sightings
Most Bulgarian reports that receive plausible explanations fall into several recurring categories.
Bright satellites. The ISS is especially prominent because it can become brighter than most stars during favourable passes. Without checking satellite predictions, observers may perceive it as unusually low, silent or even capable of changing speed when perspective and camera movement are involved.[novinite.com]novinite.comBulgarian UFO Makes Headlines, Skeptics Reveal It as ISSSofia News AgencyAugust 13, 2013…
Astronomical objects. Venus, Jupiter and bright stars near the horizon can appear to flicker, change colour or seem to hover because their light passes through thicker layers of turbulent atmosphere.
Aircraft. Landing lights viewed head-on can appear almost stationary for several minutes before suddenly seeming to accelerate as the aircraft changes its angle relative to the observer.
Camera artefacts. Consumer cameras introduce digital zoom, autofocus hunting, image stabilisation effects and sensor saturation that can make distant lights appear to pulse, wobble or change shape even when the source itself remains constant.
Atmospheric conditions. Thin cloud, haze and temperature variations can alter brightness and apparent colour, particularly near sunrise or sunset.
These explanations do not mean every report is solved. Rather, they represent the first hypotheses investigators attempt to eliminate before considering less familiar possibilities.
Why Many Bulgarian Cases Remain Unresolved
A large proportion of Bulgarian UFO reports cannot be conclusively explained because essential evidence was never collected.
Common shortcomings include:
- approximate rather than precise times;
- missing viewing direction;
- unknown camera settings;
- no original image or video files;
- absence of independent witnesses with comparable observations;
- no radar, aviation or meteorological data linked to the report.
An unresolved case therefore often reflects incomplete documentation rather than compelling evidence of an unknown object. Scientific investigators distinguish carefully between unidentified and unexplainable. The first simply means the available information is insufficient for identification; the second would require strong evidence ruling out ordinary explanations, a much higher evidential threshold.[arXiv]arxiv.orgOpen source on arxiv.org.
What Evidence Would Make a Stronger Bulgarian Case?
The weaknesses seen in many Bulgarian reports point directly to the evidence that would make future investigations more informative.
The most valuable evidence would include:
- precise timestamps synchronised to official time;
- original, uncompressed photographs or video with metadata intact;
- observations from multiple independent locations;
- known camera specifications and focal length;
- weather and visibility records;
- confirmation that satellite and aircraft databases have already been checked;
- supporting radar or other sensor observations where available.
Modern UAP research increasingly argues that isolated eyewitness testimony should be supplemented with multiple sensor types recording the same event simultaneously. This approach reduces the likelihood that optical illusions, camera artefacts or ordinary aerial traffic will be mistaken for anomalous phenomena.[arXiv]arxiv.orgOpen source on arxiv.org.
What the Bulgarian Record Ultimately Shows
The Bulgarian record offers a useful lesson in investigative method rather than in confirmed extraordinary events. The Haskovo video illustrates how a striking recording can acquire a convincing ordinary explanation once independent timing and satellite data are examined. Conversely, many other reports remain permanently unresolved because the information needed to test them was never preserved.
For readers exploring Bulgaria’s broader catalogue of sightings and historical incidents, this evidence suggests that the key dividing line is not whether a report appears mysterious at first glance, but whether it contains enough verifiable information to survive systematic checking against known natural, astronomical and human-made sources.
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Endnotes
1.
Source: novinite.com
Title: Bulgarian UFO Makes Headlines, Skeptics Reveal It as ISS
Link:https://www.novinite.com/articles/152798/Bulgarian%2BUFO%2BMakes%2BHeadlines%2C%2BSkeptics%2BReveal%2BIt%2Bas%2BISS?disable_mobile=true
Source snippet
Sofia News AgencyAugust 13, 2013...
Published: August 13, 2013
2.
Source: arxiv.org
Link:https://arxiv.org/abs/2305.18566
3.
Source: novinite.com
Title: Bulgarian UFO Video Captures Attention of ‘Fact or Faked’ Investigator
Link:https://www.novinite.com/articles/152747/Bulgarian%2BUFO%2BVideo%2BCaptures%2BAttention%2Bof%2B%27Fact%2Bor%2BFaked%27%2BInvestigator
Source snippet
Sofia News AgencyAugust 10, 2013...
Published: August 10, 2013
4.
Source: novinite.com
Title: Bulgaria UFO Video under Scrutiny By Ex-FBI Agent Ben Hansen
Link:https://www.novinite.com/articles/152794/Bulgaria%2BUFO%2BVideo%2Bunder%2BScrutiny%2BBy%2BEx-FBI%2BAgent%2BBen%2BHansen
Source snippet
Sofia News Agency...
5.
Source: arxiv.org
Title: arXiv The New Science of Unidentified Aerospace-Undersea Phenomena (UAP)
Link:https://arxiv.org/abs/2502.06794
6.
Source: space.com
Title: U-F-NO! NASA Shoots Down Speculation Over Space Station Video | Space
Link:https://www.space.com/33419-nasa-shoots-down-space-station-video-rumors.html
7.
Source: novinite.com
Title: BA S To Investigate UFO Claims
Link:https://www.novinite.com/articles/164917/BAS%2BTo%2BInvestigate%2BUFO%2BClaims
8.
Source: novinite.com
Title: IS S Mistaken for UFO over Bulgaria
Link:https://www.novinite.com/view_news.php?disable_mobile=true&id=152797
Additional References
9.
Source: fullfact.org
Link:https://fullfact.org/technology/international-space-station-video-altered/
Source snippet
August 21, 2025 — INTERNATIONAL SPACE STATION VIDEO HAS BEEN ALTERED TO MAKE IT LOOK LIKE A FAKE 21 August 2025 What was claimed A live N...
Published: August 21, 2025
10.
Source: issonlive.app
Link:https://issonlive.app/sightings/sofia/
Source snippet
ISS pass times over Sofia — when to see the Space Station · issonliveJune 30, 2026 — SEE THE ISS OVER SOFIA Bulgaria · local time The Int...
Published: June 30, 2026
11.
Source: science.nasa.gov
Title: Science UAP
Link:https://science.nasa.gov/uap/
Source snippet
NASA ScienceFebruary 23, 2026 — Explore This Section UAP CONTENTS * NASA Unidentified Anomalous Phenomena Independent Study * Final Repor...
Published: February 23, 2026
12.
Source: youtube.com
Title: We Put Fake UFO Footage on Reddit and it Went Viral
Link:https://www.youtube.com/watch?v=SJ2lXaaKmao
Source snippet
How scientists use math to help explain UFO videos...
13.
Source: mdpi.com
Link:https://www.mdpi.com/2073-4433/10/9/486
14.
Source: skepticalinquirer.org
Link:https://skepticalinquirer.org/2024/12/quick-guide-to-modern-video-analysis-techniques-for-uap-and-ufos/
15.
Source: latest-ufo-sightings.net
Link:https://www.latest-ufo-sightings.net/2014/12/study-extraterrestrial-intelligence-ufos-soon-established-bulgarian-academy.html?nonamp=1
16.
Source: renfrewshireastro.co.uk
Link:https://renfrewshireastro.co.uk/commissioning-an-all-sky-infrared-camera-array-for-detection-of-airborne-objects
17.
Source: old-news.bnr.bg
Link:https://old-news.bnr.bg/en/post/101602162/bulgarian-technology-onboard-international-space-station-to-measure-cosmic-radiation?page_1_3=10&page_1_4=8
18.
Source: xn–80abgvjd1bi0f.leadstories.com
Link:https://xn–80abgvjd1bi0f.leadstories.com/hoax-alert/2023/08/fact-check-video-does-not-show-hubble-footage-of-meteorite-right-before-it-hit-bulgaria.html