Scientific Papers

Analysis of pre-Sputnik photographic plates from a German telescope known to suffer from severe optical aberrations. Busko demonstrated that the transients appear on the plates and exhibit the same aberrations as the stars themselves — slightly narrower and sharper, consistent with brief flashes. This proves the transient light passed through the telescope optics, indicating real objects producing light rather than plate defects or cosmic-ray contamination. Busko also showed the transients cluster spatially and correlate with periods near nuclear tests.

Presents a method for identifying Non-Terrestrial Artefacts (NTAs) in or near geosynchronous Earth orbits using old photographic plates exposed before the launch of the first human satellite in 1957. Shows that even small pieces of reflective debris in orbit can be identified through searches for multiple transients. Provides probability calculations for distinguishing real point sources from plate defects, and sets an upper limit for NTAs with reflective surfaces in geosynchronous orbits.

First optical search for non-terrestrial artifacts near Earth using the First Palomar Sky Survey. Searches for simultaneous transients that are point-like and aligned. Provides a shortlist of candidate transients that require microscope examination to separate celestial sources from plate defects. Explores a possible interpretation in terms of fast reflections off high-albedo objects in geosynchronous orbits.

Reports three optically bright (~15th mag) point-sources within 10 arcseconds of each other that vanished within one hour, based on two consecutive Palomar Observatory exposures on 19 July 1952. The three sources have remained absent in exposures during 71 years. When bright in 1952, the most isolated transient had a profile nearly the same as comparison stars, implying sub-arcsecond angular size with no elongation due to movement. The explanation for these transients remains unclear.

Ten-month field study at Robert Moses State Park on Long Island, NY, to determine whether aerial phenomena of unknown nature exist over a coastal location. Used forensic engineering principles, 3 cm X-band radar in two scan geometries, and multispectral electro-optical devices. Data collected across VIS, NIR, SWIR, LWIR, UVA/UVB/UVC, and ionizing radiation (alpha, beta, gamma, X-ray).

In July 2021, UAlbany Department of Physics faculty participated in a week-long field expedition with UAPx in Avalon, California. Reviews hardware and software techniques employed, discusses successes and failures, and provides lessons for future expeditions. Deployed visible-light and infrared cameras plus sensors for non-EM emissions. Reports on 600+ hours of untriggered IR video and 55 hours of background radiation measurements. Focuses on one remaining ambiguity: a dark spot possibly coincident with ionizing radiation that resists a prosaic explanation.

Argues that UAP research requires a shift from narrative-based approaches to scientific and technology-based study. Reviews the benefits and considerations of instrumented field studies, highlighting common limitations. Provides an overview of past and current UAP military and civilian projects and a timetable of instrumented projects spanning 1950–2023. Concludes with recommendations for future field experiments using newer technologies including AI, big data analytics, and satellite imagery.

The Galileo Project, led by Prof. Avi Loeb at Harvard, has published its methods and instrumentation design across five papers in the Journal of Astronomical Instrumentation (Volume 12, Issue 01, Special Issue on UAP Instrumentation, March 2023).

Estimates lower bounds on accelerations exhibited by anomalous craft observed during well-documented encounters, including the 2004 Nimitz Carrier Group encounters. Estimated accelerations range from ~100g to thousands of g's, with no observed air disturbance, no sonic booms, and no evidence of excessive heat. Concludes the observations are either fabricated, seriously in error, or exhibit technology far more advanced than any known craft on Earth — and that the quality of witnesses and tracking equipment favors the latter hypothesis.

Derives physical constraints on interpretations of "highly maneuverable" UAP based on standard physics. Shows that friction of UAP with surrounding air or water would generate a bright optical fireball, ionization shell, and tail — implying radio signatures. Concludes that the lack of these signatures could imply inaccurate distance measurements (and hence derived velocity) for single-site sensors without a range gate capability.

A rebuttal to Zhilyaev et al.'s reported observations of dark "phantom" objects over Ukraine. Loeb shows that the friction of such objects with surrounding air would have generated a bright optical fireball. Suggests that reducing the inferred distance of the objects by a factor of ten is fully consistent with the size and speed of artillery shells.

An addendum to Loeb's paper, exploring whether hypersonic objects of ~10 m size moving at ~10 km/s would necessarily produce a bright optical fireball. Argues that aircraft engineered with a nanoscale frontal cross-sectional area would drastically reduce air "plow-through" and energy deposition, minimizing any meteor trail — as achieved by stealth drone aircraft. Notes the same principle benefits interstellar spacecraft.

Study of 408 airline pilots in Airbus TCAS/ROSE simulators, testing how causal illusions interact with perceptual biases. Results indicated causal illusions were 82.4% predictive of UAP sightings only when "magical inference" was present. Argues that some UAP sightings may be explained as cognitive biases — and that these pose a threat to aviation safety if pilots or aircraft AIs detect them in an irrational way.

Bayesian regression analysis of over 98,000 publicly reported UAP sightings in the continental US between 2001 and 2020. Tests hypotheses about sky view potential (light pollution, tree canopy, cloud cover) and the potential for objects to be present (aircraft and military installations). Finds credible correlations suggesting people see more phenomena when they have more opportunity to.

Reviews modern mass spectrometry techniques applicable to characterization of unknown materials. Applies these to the study of a well-documented, still-unexplained incident involving deposition of unknown material, with correlations between witness patterns and laboratory analysis. The lessons are applicable to reverse engineering of complex esoteric materials and aerospace forensics.

HR-ICPMS analysis of a sample from the Ubatuba fragment collected in Brazil in 1957. Magnesium isotope ratios were found to fall within terrestrial limits; isotope ratios of trace elements (strontium, barium, copper, zinc) were inconclusive. Reviews the history of chemical testing of the Ubatuba fragments from the 1960s to the 1980s at multiple labs.

Study of the imaging properties of non-magnetic left-handed materials (LHMs) with negative refractive index, and a proposal for their THz realization based on a homogeneous, naturally occurring material. Included here as a theoretical materials paper whose principles are relevant to speculation about engineered metamaterials and exotic electromagnetic properties sometimes cited in UAP propulsion discussions.

Proposes that a subset of UAP are plasmoids — self-illuminating, pulsating plasma-like objects that come in many shapes and sizes. These are attracted to electromagnetic activity, can make sharp turns, collide, and have been filmed by NASA, the US Navy, and border patrol aircraft diving into the ocean. May cause hallucinations and interfere with electronics. Argues plasmoids may represent a fourth domain of life, while noting they cannot explain all UAPs — some of which may be extraterrestrial.

Proposes a third class of UAP hypothesis beyond conventional terrestrial and extraterrestrial explanations: the "ultraterrestrial" hypothesis, with the cryptoterrestrial subset being the notion that UAP may reflect activities of intelligent beings concealed in stealth here on Earth (e.g. underground), in its near environs (e.g. the Moon), or even "walking among us." Argues this possibility should not be summarily dismissed.

Proposes that empty space itself — the quantum vacuum, or spacetime metric — might be engineered to provide energy and thrust for future space vehicles. Grounded in modern physical theory. Discusses warp drives, traversable wormholes, and time machines that provide for such vacuum engineering possibilities. Relevant to the theoretical physics backdrop of UAP propulsion speculation.

Reviews and summarises approximately 20 historical government studies dating from 1933 to the present (Scandinavia, WWII, US, Canada, France, Russia, China), plus historical private research studies (France, UK, US) and recent scientific research efforts (Ireland, Germany, Norway, Sweden, US). Dispel the misconception that UAPs are an American phenomenon. Aims to enable future studies to draw on the depth of prior documented experience.

A series of papers by Boris Zhilyaev and colleagues at the Main Astronomical Observatory of Ukraine report observations of "Cosmics" (bright) and "Phantoms" (dark) objects over Kyiv, claimed to move at hypersonic speeds with sizes of 3–100 m. The observations are contested — astronomer Avi Loeb and others have argued the objects are more consistent with artillery shells, insects, or misidentified objects at closer distances. Both the claims and the rebuttals are listed below so readers can assess the exchange directly.

A collection of publications concerning UFOs in Ukraine and the former Soviet Union, compiling historical documents and contemporary research from the Soviet and post-Soviet period. A companion volume to the Main Astronomical Observatory's contemporary observation programme.

A peer-reviewed academic journal dedicated entirely to the study of UAP. Published through Scholastica. Articles are freely available via the journal's website and the publisher's platform.

The Scientific Coalition for UAP Studies (SCU) publishes peer-reviewed articles and maintains a research library for the scientific study of UAP. A reference source for primary literature and case analysis.

The UAP Caucus publishes analysis and insights shaping the policy conversation on UAP, including papers and briefings for decision-makers.

A special issue of the Journal of Astronomical Instrumentation dedicated to instrumentation and software for the detection and characterisation of unidentified aerospace phenomena. Includes papers from the Galileo Project and other research groups.

The University of Würzburg's interdisciplinary research centre dedicated to the study of extraterrestrial intelligence and UAP. Operates the SkyCAM-5 instrument, a dedicated UAP observation system. Publications and media articles are available through the centre's website.

A curated bibliography of UFO-related articles published in peer-reviewed scientific and academic journals — a demonstration that science has taken the subject seriously across many decades, contrary to common belief.