Within Atmosphere
When the horizon puts objects in the sky
Temperature inversions can bend light so ships, coastlines or lights appear raised, stretched or suspended above the horizon.
On this page
- How inversions create superior mirages
- Ships, coastlines and lights as UFO sources
- Weather checks that make a mirage plausible
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Introduction
A superior mirage can make a real object appear to be floating in the sky. Unlike the familiar road mirage that creates the illusion of water on hot ground, a superior mirage occurs when a temperature inversion bends light downward through the atmosphere. To an observer, the light appears to have travelled in a straight line, so the object is perceived higher than its true position. Distant ships, coastlines, islands, buildings and bright lights can therefore seem suspended above the horizon, stretched vertically or displaced into empty sky. [Skybrary]skybrary.aeroSkybraryFata Morgana | SKYbrary Aviation SafetyA superior mirage occurs when there is a temperature inversion; the air below the line of… [EOAS]eoas.ubc.caEOASOptical PhenomenaA superior mirage is the opposite: a layer of warm air sits above your line of sight with a cool layer beneath it. T…
For UFO investigations, this matters because the witness is often seeing a genuine object. The error lies in where the atmosphere makes that object appear to be. A ship beyond the horizon can look airborne. A distant shoreline can resemble a gigantic structure hanging over the sea. A light source that should be hidden can appear elevated above the horizon and disconnected from any obvious source. [2A Green Flash Page]aty.sdsu.eduA Green Flash PageAn Introduction to MiragesMirages are distinguished from other refraction phenomena such as looming (visibility of dist…
How inversions create superior mirages
Under ordinary conditions, air temperature decreases with height. During a temperature inversion, the pattern reverses: colder, denser air sits near the surface while warmer air lies above it. Because light bends towards denser air, rays travelling through the inversion curve downward instead of following their usual path. The observer’s brain assumes light travelled in a straight line and therefore places the object too high in the sky. [Skybrary]skybrary.aeroSkybraryFata Morgana | SKYbrary Aviation SafetyA superior mirage occurs when there is a temperature inversion; the air below the line of… [EOAS]eoas.ubc.caEOASOptical PhenomenaA superior mirage is the opposite: a layer of warm air sits above your line of sight with a cool layer beneath it. T…
The result can take several forms:
- Looming: a distant object appears higher than it really is and may become visible even though it should be hidden below the horizon. [2A Green Flash Page]aty.sdsu.eduA Green Flash PageAn Introduction to MiragesMirages are distinguished from other refraction phenomena such as looming (visibility of dist…
- Towering: the object appears stretched vertically, making ships, buildings or landforms seem unnaturally tall. [Wikipedia]WikipediaMirageA mirage is a naturally occurring optical phenomenon in which light rays bend via refraction to produce a displaced image of dis…
- Complex superior mirages: multiple layers of distortion can produce stacked, elongated or fragmented images. In extreme cases this develops into a Fata Morgana, one of the most dramatic atmospheric illusions. [Wikipedia]WikipediaLooming and similar refraction phenomenaLooming and similar refraction phenomena
These effects are not hypothetical. Atmospheric optics specialists describe superior mirages as a well-established consequence of strong temperature gradients, particularly over cold water, sea ice and snow-covered surfaces. [EOAS]eoas.ubc.caEOASOptical PhenomenaA superior mirage is the opposite: a layer of warm air sits above your line of sight with a cool layer beneath it. T… [Wikipedia]WikipediaFata Morgana (mirageApril 15, 2026 — A Fata Morgana requires a duct to be present; thermal inversion alone is not enough to produce this kind of mirage…
Why distant objects can look impossible
The most deceptive aspect of a superior mirage is that it relocates a real object into a position where it should not physically be.
A ship near the horizon normally provides visual clues about its distance and scale. During a superior mirage, the ship may appear detached from the water, hovering above it. The observer sees a solid-looking object apparently suspended in mid-air. A widely reported example occurred off the coast of Cornwall in 2021, where photographs of a vessel appearing to float above the sea were explained by meteorologists as a superior mirage produced by atmospheric conditions. [The Guardian]theguardian.comship hovering above sea cornwall optical illusionThe GuardianWalker 'stunned' to see ship hovering high above sea off…Mar 5, 2021 — David Morris encounters rare optical illusion known…
The same mechanism can affect coastlines and islands. Refraction can lift distant landforms above the apparent horizon, making them appear closer, higher or larger than reality. Historical observations around large bodies of water have repeatedly documented opposite shores appearing elevated or magnified by looming conditions. [Wikipedia]WikipediaNational Oceanic and Atmospheric AdministrationNational Oceanic and Atmospheric AdministrationThe National Oceanic and Atmospheric Administration (NOAA /ˈnoʊ.ə/ NOH-ə) is a United S…
In particularly strong inversions, light from objects that are geometrically below the horizon can be bent into view. Researchers studying extreme superior mirages note that land and other features far beyond normal line-of-sight distance can sometimes become visible under exceptional atmospheric conditions. [sky-lights.org]sky-lights.orgextreme superior mirage1 Apr 2019 — “… light from extremely distant objects that are well below the horizon can be refracted by the temperature inversion to bec…
For a UFO witness, the crucial point is that the atmosphere can make a perfectly ordinary object appear detached from the Earth and positioned in open sky.
Ships, coastlines and lights as UFO sources
Superior mirages have several characteristics that can encourage a UFO interpretation.
Hovering ships
A distant vessel may appear as a dark or luminous object suspended above the horizon. If the observer cannot see the sea surface beneath it clearly, the object may seem to be flying rather than floating. Photographs of apparently airborne ships frequently attract UFO speculation before the optical explanation is recognised. [The Guardian]theguardian.comship hovering above sea cornwall optical illusionThe GuardianWalker 'stunned' to see ship hovering high above sea off…Mar 5, 2021 — David Morris encounters rare optical illusion known…
Elevated coastlines and islands
A lifted shoreline can resemble a vast structured object. Under poor visibility conditions, observers may perceive cliffs, hills or distant land as a gigantic airborne formation. The distortion can be especially striking when only part of the landform is visible and the lower portion remains hidden. [Wikipedia]WikipediaMirage of astronomical objectsMirage of astronomical objectsDue to a normal atmospheric refraction, sunrise occurs shortly before the Sun crosses above the horizon… [Wikipedia]WikipediaMirageA mirage is a naturally occurring optical phenomenon in which light rays bend via refraction to produce a displaced image of dis…
Lights above the horizon
A bright coastal light, vessel light or distant urban illumination can be displaced upward by refraction. At night, when there are few distance cues, the observer may see an apparently stationary glowing object suspended in the sky. Because the true source is far away and often invisible, the light can appear mysterious and difficult to identify. The Weather Channel [EOAS]eoas.ubc.caEOASOptical PhenomenaA superior mirage is the opposite: a layer of warm air sits above your line of sight with a cool layer beneath it. T…
These reports fit a recurring pattern in UFO investigations: the object is real, but atmospheric refraction has altered its apparent position and shape.
Weather checks that make a mirage plausible
Investigators should not invoke a superior mirage merely because an object looked strange. The explanation becomes persuasive when specific atmospheric conditions support it.
Key indicators include:
- Observation over cold water, sea ice or snow-covered terrain. The Weather Channel [weather.com]weather.com2026 01 13 weather words mirageThe Weather ChannelWeather Words: Mirage | Weather.comJan 21, 2026 — Superior mirages form when a layer of cold, dense air sits near the…
- Evidence of a temperature inversion from weather observations, radiosonde data or local meteorological reports. [Skybrary]skybrary.aeroSkybraryFata Morgana | SKYbrary Aviation SafetyA superior mirage occurs when there is a temperature inversion; the air below the line of…
- A sighting close to the horizon rather than high overhead. A Green Flash Page [aty.sdsu.edu]aty.sdsu.eduA Green Flash PageAn Introduction to MiragesMirages are distinguished from other refraction phenomena such as looming (visibility of dist…
- Reports that the object appeared stretched, elevated, layered or detached from the surface. [Wikipedia]WikipediaLooming and similar refraction phenomenaLooming and similar refraction phenomena
- The presence of known distant features, shipping lanes, islands, offshore structures or coastal lights in the viewing direction. [Wikipedia]WikipediaFata Morgana (mirageApril 15, 2026 — A Fata Morgana requires a duct to be present; thermal inversion alone is not enough to produce this kind of mirage…
Conversely, a superior mirage becomes less convincing when the reported object is far above the horizon, manoeuvres independently of atmospheric conditions, or cannot plausibly be matched to any distant source.
What makes superior mirages distinctive in UFO cases
Many atmospheric explanations merely blur or distort an object. Superior mirages do something more dramatic: they move a real object into an apparently impossible location. A witness can therefore be completely correct that something was visible in the sky while being mistaken about what that object actually was.
That combination makes superior mirages particularly important in the study of UFO reports. They provide a specific physical mechanism capable of turning distant ships, coastlines and lights into seemingly airborne objects without requiring anything unusual to be present in the sky at all. [skyatnightmagazine.com]skyatnightmagazine.comthings mistaken for ufosHere we'll look at some of the most likely suspects.Read more… [Skybrary]skybrary.aeroSkybraryFata Morgana | SKYbrary Aviation SafetyA superior mirage occurs when there is a temperature inversion; the air below the line of… [EOAS]eoas.ubc.caEOASOptical PhenomenaA superior mirage is the opposite: a layer of warm air sits above your line of sight with a cool layer beneath it. T…
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Endnotes
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Source: skybrary.aero
Link: https://skybrary.aero/articles/fata-morganaSource snippet
SkybraryFata Morgana | SKYbrary Aviation SafetyA superior mirage occurs when there is a temperature inversion; the air below the line of...
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Source: eoas.ubc.ca
Link: https://www.eoas.ubc.ca/courses/atsc113/sailing/met_concepts/10-met-local-conditions/10f-optical-phenomena/Source snippet
EOASOptical PhenomenaA superior mirage is the opposite: a layer of warm air sits above your line of sight with a cool layer beneath it. T...
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Source: Wikipedia
Link: https://en.wikipedia.org/wiki/MirageSource snippet
MirageA mirage is a naturally occurring optical phenomenon in which light rays bend via refraction to produce a displaced image of dis...
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Source: Wikipedia
Title: Looming and similar refraction phenomena
Link: https://en.wikipedia.org/wiki/Looming_and_similar_refraction_phenomena -
Source: weather.com
Title: 2026 01 13 weather words mirage
Link: https://weather.com/science/weather-explainers/news/2026-01-13-weather-words-mirageSource snippet
The Weather ChannelWeather Words: Mirage | Weather.comJan 21, 2026 — Superior mirages form when a layer of cold, dense air sits near the...
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Source: Wikipedia
Title: Fata Morgana (mirage)
Link: https://en.wikipedia.org/wiki/Fata_Morgana_%28mirage%29Source snippet
April 15, 2026 — A Fata Morgana requires a duct to be present; thermal inversion alone is not enough to produce this kind of mirage...
Published: April 15, 2026
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Source: sky-lights.org
Title: extreme superior mirage
Link: https://sky-lights.org/2019/04/01/extreme-superior-mirage/Source snippet
1 Apr 2019 — “… light from extremely distant objects that are well below the horizon can be refracted by the temperature inversion to bec...
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Source: skyatnightmagazine.com
Title: things mistaken for ufos
Link: https://www.skyatnightmagazine.com/space-science/things-mistaken-for-ufosSource snippet
Here we'll look at some of the most likely suspects.Read more...
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Source: facebook.com
Link: https://www.facebook.com/groups/132725197348436/posts/1700791187208488/Source snippet
inversion - quite common on Lake Ontario. Passing...Read more...
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Source: weather.gov
Link: https://www.weather.gov/Source snippet
National Weather ServiceSevere Thunderstorms and Heavy Rainfall Across the South; Heat Spreads Across the West and Southern Plains · Seve...
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Source: sky-lights.org
Title: looming stadium mirage
Link: https://sky-lights.org/2020/01/13/looming-stadium-mirage/Source snippet
Jan 13, 2020 — The ray can be bent by variations in atmospheric temperature and density along that path. This causes distant objects to a...
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Source: Wikipedia
Title: National Oceanic and Atmospheric Administration
Link: https://en.wikipedia.org/wiki/National_Oceanic_and_Atmospheric_AdministrationSource snippet
National Oceanic and Atmospheric AdministrationThe National Oceanic and Atmospheric Administration (NOAA /ˈnoʊ.ə/ NOH-ə) is a United S...
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Source: Wikipedia
Title: Mirage of astronomical objects
Link: https://en.wikipedia.org/wiki/Mirage_of_astronomical_objectsSource snippet
Mirage of astronomical objectsDue to a normal atmospheric refraction, sunrise occurs shortly before the Sun crosses above the horizon...
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Source: aty.sdsu.edu
Link: https://aty.sdsu.edu/mirages/mirintro.htmlSource snippet
A Green Flash PageAn Introduction to MiragesMirages are distinguished from other refraction phenomena such as looming (visibility of dist...
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Source: aty.sdsu.edu
Link: https://aty.sdsu.edu/mirages/mirtypes.htmlSource snippet
A Green Flash PageTypes of MiragesBesides mirages, there are other phenomena due to atmospheric refraction. These include looming (the ap...
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Source: theguardian.com
Title: ship hovering above sea cornwall optical illusion
Link: https://www.theguardian.com/science/2021/mar/05/ship-hovering-above-sea-cornwall-optical-illusionSource snippet
The GuardianWalker 'stunned' to see ship hovering high above sea off...Mar 5, 2021 — David Morris encounters rare optical illusion known...
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Source: hyperphysics.phy-astr.gsu.edu
Link: https://hyperphysics.phy-astr.gsu.edu/hbase/atmos/mirage.htmlSource snippet
and other atomospheric optic phenomenaThe looming effect is the result of a superior mirage. A typical example is a mirage of a ship form...
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Source: ebsco.com
Link: https://www.ebsco.com/research-starters/science/mirageSource snippet
Mirage | Science | Research StartersSuperior mirages, conversely, appear above the horizon. They are formed when light passes through a r...
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Source: spark.iop.org
Link: https://spark.iop.org/miragesSource snippet
| IOPSpark - Institute of Physics... object. Looming is a refraction phenomenon in which the visible horizon is lifted or lowered and dis...
Additional References
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Source: nature.com
Link: https://www.nature.com/articles/011049a0.pdfSource snippet
NATURET H £ name of "Mirage" is applied to certain illusory appearances due to excessive bending of the rays of light in their passage th...
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Source: facebook.com
Link: https://www.facebook.com/groups/804277511773474/posts/954424976758726/Source snippet
Alaskan island mirage caused by atmospheric refractionA U.F.O. or an optical illusion? A Superior Mirage is one in which the mirage image...
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Source: nsidc.org
Link: https://nsidc.org/learn/parts-cryosphere/arctic-weather-and-climate/science-arctic-weather-and-climateSource snippet
The Science of Arctic Weather and ClimateSuperior mirages sometimes appear in the Arctic because of the weather condition known as a temp...
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Source: paclights.com
Link: https://www.paclights.com/learning-center/ufo-lights-lighting-explained/Source snippet
Ufo Lights: Lighting ExplainedFurthermore, atmospheric refraction can bend light from distant objects, creating illusions of stationary o...
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Source: metabunk.org
Title: debunked hovering ship fata morgana or mirage false horizon.9112
Link: https://www.metabunk.org/threads/debunked-hovering-ship-fata-morgana-or-mirage-false-horizon.9112/Source snippet
Hovering Ship "Fata Morgana" or "Mirage" [False Horizon]1 Oct 2017 — While there have been claims it was a real flying boat, or even an o...
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Source: facebook.com
Link: https://www.facebook.com/EdPiotrowskiWPDE/posts/kristin-rahn-captured-this-bizarre-image-of-what-looks-like-floating-hotels-beyo/1489123775909485/Source snippet
an optical illusion where distant objects appear to float or invert above their real positions...
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Source: physicsforums.com
Title: the illusion of anti gravity aka a superior mirage.1000508
Link: https://www.physicsforums.com/threads/the-illusion-of-anti-gravity-aka-a-superior-mirage.1000508/Source snippet
The Illusion of Anti-Gravity (aka a Superior Mirage)5 Mar 2021 — The discussion revolves around the phenomenon of a ship appearing to hov...
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Source: facebook.com
Link: https://www.facebook.com/mattykjordan/posts/a-fata-morgana-mirage-is-an-optical-illusion-caused-by-the-bending-of-light-rays/10159801582411659/Source snippet
ally when a layer of warm air sits above cooler air near the surface.Read more...
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Source: facebook.com
Link: https://www.facebook.com/GlacierBayNationalPark/posts/have-you-witnessed-this-mirage-while-in-glacierbay-fata-morgana-is-a-mirage-seen/4725286214165699/Source snippet
This complex mirage occurs due to atmospheric refraction of light...Read more...
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Source: scribd.com
Link: https://www.scribd.com/doc/189461356/MirageSource snippet
tions of distant objects, and results from distortion of light by...Read more...
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