Within Sensor Operators
Why Go Fast looked faster than it was
The GoFast case shows how a real sensor track can look extraordinarily fast until range, aircraft motion and viewing geometry are rebuilt.
On this page
- What the video appeared to show
- How parallax changes apparent speed
- What AARO could and could not determine
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Introduction
The Navy’s “GoFast” infrared video became one of the most widely discussed UFO clips because it appeared to show a small object racing just above the ocean at extraordinary speed. For many viewers, the footage seemed to depict a craft performing far beyond known aircraft capabilities. Yet the case has become an important example of how sensor imagery can be misleading when range, viewing geometry and the observer’s own motion are not fully reconstructed.
Within the broader question of identified flying objects (IFOs), GoFast is significant because the mystery centres less on whether a real object existed and more on how its apparent motion was interpreted. Subsequent analyses by independent researchers, NASA-associated investigators and the U.S. Department of Defense’s All-domain Anomaly Resolution Office (AARO) concluded that much of the dramatic speed impression can be explained by parallax—the way objects appear to move when viewed from a rapidly moving platform. [AARO]aaro.milGo Fast Case ResolutionAAROAARO GoFast Case ResolutionFebruary 24, 2025 — 6 Feb 2025 — 5 mph - 92 mph. The video appeared to show the object moving at high spee… [Metabunk]metabunk.orgnasa panel analyzes go fast.13174MetabunkNASA panel analyzes GO FAST19 Sept 2023 — Given that the aircraft's groundspeed is about 435 mph, we may conclude that the impres…
Why GoFast looked faster than it was
The footage was recorded in January 2015 by an F/A-18 fighter aircraft operating off the eastern coast of Florida. The targeting pod locked onto a distant object while the aircraft itself was travelling at several hundred miles per hour. On screen, the tracked object seems to streak across the ocean surface, prompting excited reactions from the aircrew. [UFO Transparency]ufotransparency.comAn Intelligence Community pixel analysis estimatedUFO TransparencyAARO Resolves Go Fast as Parallax, 2025, All-domain Anomaly…The apparent speed was attributed to motion parallax induc…
The visual impression creates two assumptions that are easy to make but difficult to verify from the video alone:
- The object is very close to the water.
- The object is moving extremely fast across that water. [nypost.com]nypost.compentagon claims to debunk famous gofast ufo radar videoPentagon claims to debunk famous 'GOFAST' UFO radar…20 Nov 2024 — The “GOFAST” video shows a radar recording of an object that appeare…
Neither assumption is directly measured by what viewers see. The display shows angles, tracking information and estimated range, but the human eye naturally interprets the moving background as evidence that the target itself must be racing forward. In reality, a large fraction of the apparent motion can come from the aircraft’s own movement and changing viewing angle. [AARO]aaro.milOpen source on aaro.mil.
This distinction is crucial. A target that appears to dart across the frame is not necessarily darting through the atmosphere at the same speed. The motion seen on a screen is a combination of target motion, aircraft motion, camera tracking behaviour and perspective.
How parallax changes apparent speed
Parallax is the apparent shift in an object’s position when an observer moves. Nearby objects appear to move across the field of view faster than distant ones, even if they are stationary or moving slowly. The effect is familiar when looking out of a train window: nearby trees seem to rush past while distant hills barely move. [Wikipedia]WikipediaPentagon UFO videosPentagon UFO videosThe Pentagon UFO videos are selected visual recordings of Forward-looking infrared (FLIR) targeting cameras from Un…
In the GoFast case, the observer was not standing still but flying at high speed in a fighter aircraft. The targeting pod continuously adjusted its aim while tracking the object. Because the aircraft was moving rapidly relative to both the target and the ocean background, the resulting geometry created an exaggerated impression of speed. [AARO]aaro.milGo Fast Case ResolutionAAROAARO GoFast Case ResolutionFebruary 24, 2025 — 6 Feb 2025 — 5 mph - 92 mph. The video appeared to show the object moving at high spee…
Several independent analyses reached similar conclusions. Using the telemetry visible on the display, researchers reconstructed the geometry and found that the object did not need to be travelling at extraordinary velocity. Instead, a relatively slow-moving airborne object could produce the same visual effect when viewed from a fast-moving jet. [Metabunk]metabunk.orggo fast footage from tom delonges to the stars academy bird balloon.9569GO FAST" Footage from Tom DeLonge's To The Stars…9 Mar 2018 — parallax effect. With this model, the speed of the object could be anyt… [Metabunk]metabunk.orgnasa panel analyzes go fast.13174MetabunkNASA panel analyzes GO FAST19 Sept 2023 — Given that the aircraft's groundspeed is about 435 mph, we may conclude that the impres…
An important point often overlooked in discussions of the clip is that screen motion and physical motion are different quantities. The object moves noticeably against the ocean backdrop in the video, but that does not automatically reveal its true speed through the air. Determining actual velocity requires knowledge of range, altitude, aircraft position and line-of-sight geometry. Without those factors, visual intuition can be highly misleading. [AARO]aaro.milOpen source on aaro.mil.
Reconstructing the geometry
Analysts examined information embedded in the display, including the aircraft altitude, camera elevation angle and estimated target range. From these values they could estimate the object’s position relative to both the aircraft and the ocean surface. [Metabunk]metabunk.orggo fast footage from tom delonges to the stars academy bird balloon.9569GO FAST" Footage from Tom DeLonge's To The Stars…9 Mar 2018 — parallax effect. With this model, the speed of the object could be anyt…
Those calculations suggested that the object was not skimming the waves at extreme speed. Instead, it was likely thousands of feet above the ocean. Once that altitude is taken into account, the apparent rapid motion across the water becomes much less remarkable. [AARO]aaro.milOpen source on aaro.mil.
The result does not prove the object’s identity. It does, however, demonstrate that the extraordinary-speed interpretation is not required by the available data.
What AARO could and could not determine
AARO’s detailed case review represents the most formal government analysis released so far. The office concluded with high confidence that the object did not display anomalous speed or manoeuvring characteristics. According to its reconstruction, the apparent high speed was primarily the result of motion parallax generated by the aircraft’s movement and viewing geometry. AARO [The Black Vault]theblackvault.compentagon releases aaro report on go fast video analysisPentagon Releases AARO Report on 'Go Fast' Video…Feb 10, 2025 — “The object's apparent high speed is attributable to motion parallax…
The analysis estimated plausible object speeds ranging roughly from 5 to 92 miles per hour under different wind assumptions. Those values are dramatically lower than the extraordinary velocities often inferred from a casual viewing of the footage. AARO further assessed that the object’s behaviour was consistent with movement influenced by prevailing winds rather than advanced propulsion. [AARO]aaro.milOpen source on aaro.mil.
However, AARO also highlighted an important limitation: identifying the object is not the same as explaining its apparent speed. The office stated that it could not definitively determine what the object was. The original source file and complete metadata were unavailable, forcing analysts to work from publicly available video copies rather than the full sensor record. [AARO]aaro.milOpen source on aaro.mil.
As a result, two conclusions can coexist:
- The object’s apparent extreme speed can be explained without invoking exotic technology.
- The precise identity of the object remains uncertain.
That combination is common in UFO investigations. A report may lose its most extraordinary feature while still lacking enough information for a complete identification.
What the GoFast case shows about UFO evidence
GoFast has become a textbook example of why sensor footage must be interpreted cautiously. The video records a genuine tracked object, but the most dramatic claim associated with it—the appearance of tremendous speed—depends heavily on perspective and observer motion. Reconstructing the geometry changes the story from one of apparent extraordinary performance to one of ambiguous identification. AARO [PBS]pbs.orgPBS3 ways scientists use math to help debunk UFO videos24 Apr 2025 — Semeter helped analyze one particular video called "GO FAST," where…
For the study of IFOs, the lesson is not that every unusual video is solved, nor that every sensor track is a mistake. Rather, it demonstrates how easily apparent motion can be confused with actual motion. When range, altitude and platform movement are properly accounted for, some of the most striking UFO footage can turn out to be illustrating a well-understood optical effect rather than an object performing impossible manoeuvres. [AARO]aaro.milOpen source on aaro.mil. [Metabunk]metabunk.orggo fast footage from tom delonges to the stars academy bird balloon.9569GO FAST" Footage from Tom DeLonge's To The Stars…9 Mar 2018 — parallax effect. With this model, the speed of the object could be anyt…
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Endnotes
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Source: aaro.mil
Title: Go Fast Case Resolution
Link: https://www.aaro.mil/Portals/136/PDFs/case_resolution_reports/AARO_GoFast_Case_Resolution_Card_Methodology_Final.pdfSource snippet
AAROAARO GoFast Case ResolutionFebruary 24, 2025 — 6 Feb 2025 — 5 mph - 92 mph. The video appeared to show the object moving at high spee...
Published: February 24, 2025
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Source: metabunk.org
Title: nasa panel analyzes go fast.13174
Link: https://www.metabunk.org/threads/nasa-panel-analyzes-go-fast.13174/Source snippet
MetabunkNASA panel analyzes GO FAST19 Sept 2023 — Given that the aircraft's groundspeed is about 435 mph, we may conclude that the impres...
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Source: pbs.org
Link: https://www.pbs.org/newshour/science/3-ways-scientists-use-math-to-help-debunk-ufo-videosSource snippet
PBS3 ways scientists use math to help debunk UFO videos24 Apr 2025 — Semeter helped analyze one particular video called "GO FAST," where...
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Source: Wikipedia
Title: Pentagon UFO videos
Link: https://en.wikipedia.org/wiki/Pentagon_UFO_videosSource snippet
Pentagon UFO videosThe Pentagon UFO videos are selected visual recordings of Forward-looking infrared (FLIR) targeting cameras from Un...
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Source: Wikipedia
Link: https://en.wikipedia.org/wiki/ParallaxSource snippet
April 9, 2026 — Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sightR...
Published: April 9, 2026
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Source: metabunk.org
Title: go fast footage from tom delonges to the [stars]({{ ‘stars/’ | relative_url }}) academy bird balloon.9569
Link: https://www.metabunk.org/threads/go-fast-footage-from-tom-delonges-to-the-stars-academy-bird-balloon.9569/Source snippet
"GO FAST" Footage from Tom DeLonge's To The Stars...9 Mar 2018 — parallax effect. With this model, the speed of the object could be anyt...
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Source: aaro.mil
Link: https://www.aaro.mil/UAP-Cases/UAP-Case-Resolution-Reports/ -
Source: ufotransparency.com
Title: An Intelligence Community pixel analysis estimated
Link: https://ufotransparency.com/files/decade-2020s-aaro-gofast-case-resolution-2025-aaro-gofast-case-resolution-card-methodology-finalSource snippet
UFO TransparencyAARO Resolves Go Fast as Parallax, 2025, All-domain Anomaly...The apparent speed was attributed to motion parallax induc...
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Source: theblackvault.com
Title: pentagon releases aaro report on go fast video analysis
Link: https://www.theblackvault.com/documentarchive/pentagon-releases-aaro-report-on-go-fast-video-analysis/Source snippet
Pentagon Releases AARO Report on 'Go Fast' Video...Feb 10, 2025 — “The object's apparent high speed is attributable to motion parallax...
Additional References
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Source: reddit.com
Link: https://www.reddit.com/r/UFOs/comments/166dk0u/according_to_aaros_new_website_the_flir_gimbal/Source snippet
According to AARO's new website, the FLIR, Gimbal and...Gimbal, and GoFast videos are “unresolved.” GoFast is mundane object with parall...
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Source: reddit.com
Link: https://www.reddit.com/r/ufo/comments/1gwaqwk/speed_of_gofast/Source snippet
Speed of GOFAST.: r/ufoThe approximate speed of the object is calculable by comparing the angle of the camera at the start and end of th...
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Source: instagram.com
Link: https://www.instagram.com/reel/DNRG7pJAsNm/?hl=enSource snippet
StarTalk on Instagram: "Is motion parallax the reason many...There's nothing, but with the parallax, we can assess that the object is mo...
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Source: youtube.com
Link: https://www.youtube.com/watch?v=diPXow8zgc8Source snippet
How scientists use math to help explain UFO videosNASA and the US government have turned to math and science publicly to help show how se...
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Source: reddit.com
Link: https://www.reddit.com/r/UFOs/comments/1gv8xak/aaro_has_resolved_the_go_fast_uap/Source snippet
Wind speed at that altitude was 60 knots. Object moved in a relatively straight...Read more...
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Source: nypost.com
Title: pentagon claims to debunk famous gofast ufo [radar]({{ ‘radar/’ | relative_url }}) video
Link: https://nypost.com/2024/11/20/us-news/pentagon-claims-to-debunk-famous-gofast-ufo-radar-video/Source snippet
Pentagon claims to debunk famous 'GOFAST' UFO radar...20 Nov 2024 — The “GOFAST” video shows a radar recording of an object that appeare...
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Source: defensescoop.com
Title: uap aaro findings go fast [puerto rico]({{ ‘puerto-rico/’ | relative_url }}) mt etna objects
Link: https://defensescoop.com/2024/11/19/uap-aaro-findings-go-fast-puerto-rico-mt-etna-objects/Source snippet
Pentagon's UAP office reviews findings on Go Fast, Puerto...19 Nov 2024 — The head of the Defense Department's All-Domain Anomaly Resolu...
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Source: space.com
Title: “We do have some very anomalous objects,” he said
Link: https://www.space.com/space-exploration/search-for-life/pentagon-ufo-chief-tells-senate-very-anomalous-objects-need-careful-study-videoSource snippet
Pentagon UFO chief tells Senate 'very anomalous objects'...Nov 19, 2024 — Kosloski noted that his office does not believe that every UAP...
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Source: aol.com
Link: https://www.aol.com/pentagon-claims-debunk-famous-gofast-043921996.htmlSource snippet
ar “GOFAST” video, saying that the attention was unwarranted for the footage...
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Source: vice.com
Title: the skeptics guide to the pentagons ufo videos
Link: https://www.vice.com/en/article/the-skeptics-guide-to-the-pentagons-ufo-videos/Source snippet
The Skeptic's Guide to the Pentagon's UFO Videos6 May 2020 — West thinks GOFAST is a balloon tracked by a camera and given unnatural spee...
Published: May 2020
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