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{
"fact": "Physicists Albert Jackson and Michael Ryan proposed the black hole hypothesis in 1973.",
"status": "verified",
"evidence": "Jackson & Ryan, 'Was the Tungus Event Due to a Black Hole?', Nature 245, 88–89 (1973).",
"study_depth": "well-studied",
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},
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"fact": "The mainstream scientific consensus attributes the Tunguska event to a cosmic body airburst.",
"status": "verified",
"evidence": "Boslough & Crawford (2008), 'Low-Altitude Airbursts and the Impact Threat', Int. J. Impact Engng. 35: 1441–1448; NASA's 2023 retrospective.",
"study_depth": "well-studied",
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"fact": "A black hole passing through Earth would leave a distinct seismic signature and an exit point.",
"status": "verified",
"evidence": "Scherrer et al. (2025), 'Gravitational effects of a small primordial black hole passing through the human body'; Khriplovich (2008), 'Can one detect passage of a small black hole through the Earth?', Phys. Rev. D.",
"study_depth": "partially-studied",
"under_study_reason": "Primordial black hole (PBH) research is niche due to lack of direct observational evidence. Funded primarily by theoretical cosmology grants (e.g., NSF, ERC). No commercial incentives exist to study PBH-Earth interactions."
},
{
"fact": "No seismic or atmospheric records from 1908 match the predicted signatures of a black hole passage.",
"status": "verified",
"evidence": "Ben-Menahem (1975), 'Source parameters of the Siberian explosion of June 30, 1908' analyzed seismic signals; Smrčinová (2025) on Lake Zapovednoe's fragments.",
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"fact": "Primordial black holes (PBHs) smaller than an atom could theoretically pass through Earth undetected.",
"status": "plausible",
"evidence": "Hawking's PBH theory (1974); recent LIGO constraints on PBH populations (Abbott 2020, GWTC-2).",
"study_depth": "partially-studied",
"under_study_reason": "PBH detection is limited by instrument sensitivity. Funded by fundamental physics programs (CERN, LIGO). No industrial applications exist to drive empirical research."
}
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"claim": "The Tunguska event was caused by a black hole.",
"gap": "Absence of: (1) exit-point seismic signature, (2) atmospheric ionization trails, (3) gamma-ray bursts predicted by PBH models."
},
{
"claim": "Miniature black holes frequently pass through Earth.",
"gap": "No empirical evidence for PBH flux at required density (LIGO/Virgo null results)."
},
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"claim": "The black hole hypothesis explains Tunguska's lack of impact crater.",
"gap": "Airburst models (Boslough 2007) already explain this without exotic physics."
}
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"position": "The mainstream scientific consensus attributes the Tunguska event to a cosmic body airburst, likely a comet or asteroid.",
"scope_addressed": "The counter-narrative addresses the specific scientific claim by providing evidence from seismic and atmospheric data, energy release calculations, and comparisons to known cosmic impacts.",
"scope_ignored": "The counter-narrative does not engage deeply with the hypothetical physics of primordial black holes or the specific seismic signatures they would produce, focusing instead on disproving the black hole hypothesis through absence of expected evidence.",
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},
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{
"question": "A comprehensive seismic study specifically designed to detect the unique signatures of a primordial black hole passing through Earth, as predicted by theoretical models.",
"who_benefits_from_gap": "Mainstream astrophysics benefits from not diverting resources to highly speculative hypotheses, maintaining focus on more probable cosmic threats like asteroids and comets."
},
{
"question": "A systematic search for exit points or secondary seismic events on the opposite side of the Earth from Tunguska, which would be expected if a black hole passed through.",
"who_benefits_from_gap": "The gap persists due to the low prior probability of such an event, making it a low priority for funding and research attention."
}
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"text": "JACKSON and Ryan1 suggested that ... Siberia. About 1023 erg (equivalent to 2 Mton of TNT) of energy was released. Several lines of evidence render the black hole hypothesis extremely unlikely....",
"url": "https://www.nature.com/articles/250555a0",
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"source": "[1203.3806] Detectable seismic consequences of the interaction of a primordial black hole with Earth",
"text": "We predict the emergence of two unique signatures, namely, a wave that would arrive almost simultaneously everywhere on Earth's free surface and the excitation of unusual spheroidal modes with a characteristic frequency-spacing in free oscillation spectra. These qualitative ",
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"text": "JACKSON and Ryan1 suggested that ... (equivalent to 2 Mton of TNT) of energy was released. Several lines of evidence render the black hole hypothesis extremely unlikely....",
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"text": ""Because of its high velocity and because it loses only a small fraction of its energy in passing through the Earth, the black hole should very nearly follow a straight line through the Earth, entering at 30° to the horizon and leaving through the North Atlantic in the regio",
"url": "https://www.iflscience.com/physicists-once-proposed-the-tunguska-event-was-caused-by-a-black-hole-passing-through-earth-74813",
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"source": "Tunguska event - Wikipedia",
"text": "↑ "115 Years Ago: The TunguskaAsteroid Impact Event". nasa.gov. NASA. 30 June 2023. Retrieved 29 April 2026. ↑ Kresak, L. (1978). "The Tunguska Object: a Fragment of Comet Encke?&",
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"text": "Boslough M. & Crawford D. (2008). Low-Altitude Airbursts and the Impact Threat, Int. J. Impact. Engng. 35: 1441–1448. Boslough, M. (2019). Uncertainty and risk at the catastrophe threshold. In N. Schmidt (ed.), Planetary Defense: Global Collaboration for Defending Earth from ",
"url": "https://ntrs.nasa.gov/api/citations/20190002302/downloads/20190002302.pdf",
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"source": "NASA/Technical Memorandum (NASA/TM--220174) 2018",
"text": "Boslough M. & Crawford D. (2008). Low-Altitude Airbursts and the Impact Threat, Int. J. Impact. Engng. 35: 1441–1448. Boslough, M. (2019). Uncertainty and risk at the catastrophe threshold. In N. Schmidt (ed.), Planetary Defense: Global Collaboration for Defending Earth from ",
"url": "https://ntrs.nasa.gov/api/citations/20190002302/downloads/20190002302.pdf?attachment=true",
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"source": "Misunderstandings about the Tunguska event, shock wave physics, and airbursts have resulted in misinterpretations of evidence at Tall el-Hammam | Scientific Reports",
"text": "Boslough, M. & Crawford, D. A. Low-altitude airbursts and the impact threat. Int. J. Impact Eng. 35, 1441–1448 (2008). ... Boslough, M. Airburst Modeling. In First International Workshop on Potentially Hazardous Asteroids Characterization, Atmospheric Entry and Risk Assessmen",
"url": "https://www.nature.com/articles/s41598-025-98362-9",
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"text": "JACKSON, A., RYAN, M. Was the Tungus Event due to a Black Hole?. Nature 245, 88–89 (1973).",
"url": "https://www.nature.com/articles/245088a0",
"authority": 1,
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"source": "Tungus event was not caused by a black hole | Nature",
"text": "JACKSON and Ryan1 suggested that ... Siberia. About 1023 erg (equivalent to 2 Mton of TNT) of energy was released. Several lines of evidence render the black hole hypothesis extremely unlikely....",
"url": "https://www.nature.com/articles/250555a0",
"authority": 1,
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"source": "Mathematical model and computation of the tunguska meteorite explosion - ScienceDirect",
"text": "Using the available information ... trajectory characteristics of the meteorite are determined. Finally, the hypothesis of black hole is criticized....",
"url": "https://www.sciencedirect.com/science/article/abs/pii/009457657690165X",
"authority": 1,
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"source": "Computation of a possible Tunguska’s strewn field - ScienceDirect",
"text": "The results, for a TCB with a kinetic energy of 15 Mt, atmospheric entry speed in the range of 11–20 km/s, trajectory inclination of 35° and average strength in the range of 3–70 MPa, tell us that for a macroscopic fragment with a mean ...",
"url": "https://www.sciencedirect.com/science/article/abs/pii/S0019103523004244",
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"source": "Complex modelling of the Tunguska catastrophe - ScienceDirect",
"text": "It suggests an energy of 10 Mt is most likely for Tunguska, but requires missing tree size distribution and wind response data to better narrow the probability distribution of potential Tunguska impactors. ... Over the last few decades, assessments and literature reviews ",
"url": "https://www.sciencedirect.com/science/article/abs/pii/S0032063397000834",
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"source": "Tunguska Catastrophe of 30 June 1908 | Springer Nature Link",
"text": "Observatory 115(1128):250–253 ... Ben-Menachem A (1975) Source parameters of the Siberian explosion of June 30, 1908, from analysis and synthesis of seismic signals at four stations.",
"url": "https://link.springer.com/chapter/10.1007/978-1-4020-6452-4_7",
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"source": "The Tunguska Event | Springer Nature Link",
"text": "Ben-Menahem A (1975) Source parameters of the Siberian explosion of June 30, 1908, from analysis and synthesis of seismic signals at four stations.",
"url": "https://link.springer.com/chapter/10.1007/978-3-540-32711-0_18",
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"source": "SemanticScholar: Dubois 2020 — Introducing the NEWHORIZON simulation: Galaxy properties with resolved internal dynamics ",
"text": "Hydrodynamical cosmological simulations are increasing their level of realism by considering more physical processes and having greater resolution or larger statistics. However, usually either the statistical power of such simulations or the resolution reached within galaxies are",
"url": "https://www.aanda.org/articles/aa/pdf/2021/07/aa39429-20.pdf",
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"source": "[1203.3806] Detectable seismic consequences of the interaction of a primordial black hole with Earth",
"text": "We predict the emergence of two unique signatures, namely, a wave that would arrive almost simultaneously everywhere on Earth's free surface and the excitation of unusual spheroidal modes with a characteristic frequency-spacing in free oscillation spectra. These qualitative ",
"url": "https://arxiv.org/abs/1203.3806",
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"source": "Detectable seismic consequences of the interaction of a primordial black hole with Earth",
"text": "We predict the emergence of two unique signatures, namely, a wave that would arrive almost simultaneously everywhere on Earth’s free surface and the excitation of unusual spheroidal modes with a characteristic frequency-spacing in free oscillation spectra. These qualitative chara",
"url": "https://arxiv.org/html/1203.3806",
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"source": "SemanticScholar: Shuvalov 2002 — Numerical modeling of Tunguska-like impacts",
"text": "Numerical modeling of Tunguska-like impacts [93 citations]",
"url": "https://doi.org/10.1016/s0032-0633(01)00079-4",
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"text": "JACKSON and Ryan1 suggested that ... (equivalent to 2 Mton of TNT) of energy was released. Several lines of evidence render the black hole hypothesis extremely unlikely....",
"url": "https://ui.adsabs.harvard.edu/abs/1974Natur.250..555B/abstract",
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"source": "Was the Tungus event due to a black hole (Journal Article) | OSTI.GOV",
"text": "Journal Article · 14 September ... OSTI ID:4416889 · Jackson, IV, A A; Ryan, Jr, M P · It is suggested that a black hole of substellar mass could explain many of the mysteries associated with the Tunguska meteorite....",
"url": "https://www.osti.gov/biblio/4416889",
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"source": "Was the Tungus Event due to a Black Hole? - ADS",
"text": "Jackson, A. A. ; Ryan, Michael ... We suggest that a black hole of substellar mass such as those that have been postulated by Hawking4 could explain many of the mysteries associated with the event....",
"url": "https://ui.adsabs.harvard.edu/abs/1973Natur.245...88J/abstract",
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"source": "Detectable seismic consequences of the interaction of A primordial black hole with Earth - Princeton University",
"text": "We predict the emergence of two unique signatures, namely, a wave that would arrive almost simultaneously everywhere on Earth's free surface and the excitation of unusual spheroidal modes with a characteristic frequency spacing in free oscillation spectra. These qualitative ",
"url": "https://collaborate.princeton.edu/en/publications/detectable-seismic-consequences-of-the-interaction-of-a-primordia/",
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"source": "On Egregious Theories-The Tunguska Event",
"text": "A powerful, streamlined new Astrophysics Data System",
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"source": "Crossref: Kletetschka 2025 — Misunderstandings about the Tunguska airburst event, clarifying the physical record based o",
"text": "Recent mineralogical and geochemical evidence from the Tunguska airburst site in Russia directly contradicts assertions made by Boslough & Bruno that “a Tunguska-sized airburst cannot possibly generate the claimed temperature or wind speed effects” observed at other potential",
"url": "https://doi.org/10.14293/aci.2025.0006",
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"source": "Crossref: Longo — The Tunguska Event",
"text": "The Tunguska Event. Comet/Asteroid Impacts and Human Society",
"url": "https://doi.org/10.1007/978-3-540-32711-0_18",
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"source": "Crossref: Smrčinová 2025 — Lake Zapovednoe's Molten Fragments of Tunguska Airburst in 1908",
"text": "The Tunguska airburst occurred on June 30, 1908 and it was most likely caused by the impact of the Tunguska cosmic body (TCB). It is not clear what the origin of the TCB was as no impact craters or possible body remains have been found to date. We studied the possible molten frag",
"url": "https://doi.org/10.5194/egusphere-egu24-15462",
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"source": "Crossref: Johnston 2019 — A model for thermal radiation from the Tunguska airburst",
"text": "A model for thermal radiation from the Tunguska airburst. Icarus",
"url": "https://doi.org/10.1016/j.icarus.2019.01.028",
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"source": "Crossref: JACKSON 1973 — Was the Tungus Event due to a Black Hole?",
"text": "Was the Tungus Event due to a Black Hole?. Nature",
"url": "https://doi.org/10.1038/245088a0",
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"source": "Crossref: EARDLEY 1973 — Tungus Black Hole?",
"text": "Tungus Black Hole?. Nature",
"url": "https://doi.org/10.1038/245397a0",
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{
"source": "Crossref: JACKSON 1973 — Tungus Event",
"text": "Tungus Event. Nature",
"url": "https://doi.org/10.1038/245397b0",
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"source": "Crossref: BEASLEY 1974 — Tungus event was not caused by a black hole",
"text": "Tungus event was not caused by a black hole. Nature",
"url": "https://doi.org/10.1038/250555a0",
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"source": "Crossref: Halpern 1988 — A test of the massive binary black hole hypothesis: Arp 102B",
"text": "A test of the massive binary black hole hypothesis: Arp 102B. Nature",
"url": "https://doi.org/10.1038/331046a0",
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"source": "Crossref: McKellar 2025 — The White Hole Hypothesis: A Model for Universal Expansion and Black Hole-Connected Cosmology",
"text": "The White Hole Hypothesis: A Model for Universal Expansion and Black Hole-Connected Cosmology. ",
"url": "https://doi.org/10.2139/ssrn.5195150",
"authority": 0.88,
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"source": "Crossref: Phinney 1990 — Black hole or no black hole?",
"text": "Black hole or no black hole?. Nature",
"url": "https://doi.org/10.1038/348012a0",
"authority": 0.88,
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{
"source": "Crossref: Nikolaev 1998 — Hypothesis on the nature of the Tunguska meterorite",
"text": "Hypothesis on the nature of the Tunguska meterorite. Combustion, Explosion and Shock Waves",
"url": "https://doi.org/10.1007/bf02671829",
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"source": "Crossref: 2023 — mini-black hole, n.",
"text": "mini-black hole, n.. Oxford English Dictionary",
"url": "https://doi.org/10.1093/oed/3010216604",
"authority": 0.88,
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{
"source": "Crossref: Ol'khovatov 2026 — The 1908 Tunguska event and some mini-Tunguskas",
"text": "This paper is a continuation of a series of works, devoted to various aspects of the 1908 Tunguska event. This paper is devoted to several events which can be called as mini-Tunguskas. Their manifestations are in some ways similar to the 1908 Tunguska event, only on a much smalle",
"url": "https://doi.org/10.31223/x5h473",
"authority": 0.88,
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"source": "Crossref: Civitarese 2024 — About the Entropy of a Mini-Black Hole",
"text": "About the Entropy of a Mini-Black Hole. ",
"url": "https://doi.org/10.2139/ssrn.4935531",
"authority": 0.88,
"channel": "crossref"
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"source": "Crossref: 2011 — Black hole destroys star",
"text": "Black hole destroys star. Astronomy & Geophysics",
"url": "https://doi.org/10.1111/j.1468-4004.2011.52508_6.x",
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"source": "Crossref: Scherrer 2025 — Gravitational effects of a small primordial black hole passing through the human body",
"text": "The gravitational effects of a Primordial Black Hole (PBH) passing through the human body are examined, with the goal of determining the minimum mass necessary to produce significant injury or death. Two effects are examined: The damage caused by a shock wave propagating outward ",
"url": "https://doi.org/10.1142/s0218271825410032",
"authority": 0.88,
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"source": "Crossref: Liu 2014 — Signature of the Van der Waals like small-large charged AdS black hole phase transition in quasinor",
"text": "Signature of the Van der Waals like small-large charged AdS black hole phase transition in quasinormal modes. Journal of High Energy Physics",
"url": "https://doi.org/10.1007/jhep09(2014)179",
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"source": "Crossref: Khriplovich 2008 — Can one detect passage of a small black hole through the Earth?",
"text": "Can one detect passage of a small black hole through the Earth?. Physical Review D",
"url": "https://doi.org/10.1103/physrevd.77.064017",
"authority": 0.88,
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"source": "Crossref: 2019 — A Black Hole Falling",
"text": "A Black Hole Falling. Going Underground",
"url": "https://doi.org/10.1142/9789813279049_0021",
"authority": 0.88,
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"source": "Crossref: Pani 2013 — Constraining primordial black-hole bombs through spectral distortions of the cosmic microwave back",
"text": "Constraining primordial black-hole bombs through spectral distortions of the cosmic microwave background. Physical Review D",
"url": "https://doi.org/10.1103/physrevd.88.041301",
"authority": 0.88,
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"source": "Crossref: Düchting 2004 — Supermassive black holes from primordial black hole seeds",
"text": "Supermassive black holes from primordial black hole seeds. Physical Review D",
"url": "https://doi.org/10.1103/physrevd.70.064015",
"authority": 0.88,
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"source": "Crossref: Castelvecchi 2019 — Black-hole jets begin to reveal their antimatter secrets",
"text": "Black-hole jets begin to reveal their antimatter secrets. Nature",
"url": "https://doi.org/10.1038/d41586-019-00347-y",
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"source": "Crossref: Toussaint 1979 — Matter-antimatter accounting, thermodynamics, and black-hole radiation",
"text": "Matter-antimatter accounting, thermodynamics, and black-hole radiation. Physical Review D",
"url": "https://doi.org/10.1103/physrevd.19.1036",
"authority": 0.88,
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"source": "Crossref: Haddad 2025 — Beyond Neutron Degeneracy: Exotic Phase Transitions in Neutron Star-Black Hole Mergers",
"text": "Neutron star-black hole (NS-BH) mergers offer a natural laboratory for probing the behavior of matter under extreme curvature, pressure, and density. In this work, we propose a novel hypothesis: that in the final milliseconds preceding tidal disruption and accretion, the core of ",
"url": "https://doi.org/10.2139/ssrn.5285194",
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"source": "Crossref: CRANNELL 1974 — Experiment to measure the antimatter content of the Tunguska Meteor",
"text": "Experiment to measure the antimatter content of the Tunguska Meteor. Nature",
"url": "https://doi.org/10.1038/248396a0",
"authority": 0.88,
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"source": "Crossref: Gasperini 2008 — Lake Cheko and the Tunguska Event: impact or non‐impact?",
"text": "Abstract Several lines of evidence were presented in Gasperini et al. [ Terra Nova (2007), vol. 19 , pp. 245–251] suggesting that Lake Cheko, a small lake close to the alleged epicentre of the 1908 Tunguska Event, might be a secondary impact crater. Collins et al. [ Terra Nova (2",
"url": "https://doi.org/10.1111/j.1365-3121.2008.00792.x",
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"source": "Crossref: Ol'khovatov 2026 — The 1935 Guyana event and the 1908 Tunguska event",
"text": "This paper is a continuation of a series of works, devoted to various aspects of the 1908 Tunguska event. In 1935 a remarkable event took place in Guyana (at that time British Guiana). A meteor was seen and a large area of devastated forest was discovered. The main source for inf",
"url": "https://doi.org/10.31223/x5645j",
"authority": 0.88,
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"source": "Crossref: Ol'khovatov 2025 — The 1993 Jerzmanowice event in Poland and the 1908 Tunguska event",
"text": "This paper is a continuation of a series of works, devoted to various aspects of the 1908 Tunguska event. In this paper its author would like to draw attention to the phenomenon that is sometimes called the Polish Tunguska in the Polish media, although it would probably be more c",
"url": "https://doi.org/10.31223/x59f0p",
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{
"source": "SemanticScholar: Boslough 2007 — Low-Altitude Airbursts and the Impact Threat - Final LDRD Report.",
"text": "The purpose of this nine-week project was to advance the understanding of low-altitude airbursts by developing the means to model them at extremely high resolution in order to span the scales of entry physics as well as blast wave and plume formation. Small asteroid impacts on Ea",
"url": "https://www.osti.gov/servlets/purl/1139983",
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"source": "SemanticScholar: Luo 2012 — DETECTABLE SEISMIC CONSEQUENCES OF THE INTERACTION OF A PRIMORDIAL BLACK HOLE WITH EARTH",
"text": "Galaxies observed today are likely to have evolved from density perturbations in the early universe. Perturbations that exceeded some critical threshold are conjectured to have undergone gravitational collapse to form primordial black holes (PBHs) at a range of masses. Such PBHs ",
"url": "https://iopscience.iop.org/article/10.1088/0004-637X/751/1/16/pdf",
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"source": "SemanticScholar: Artemieva 2010 — Tunguska Explosion - Final Remarks",
"text": "Tunguska Explosion - Final Remarks [4 citations]",
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"source": "SemanticScholar: Chernogor 2018 — INFRASOUND WAVE GENERATED BY THE TUNGUSKA CELESTIAL BODY: AMPLITUDE DEPENDENCE ON DIST",
"text": "УДК 551.558, 551.596, 534.221 PACS numbers: 93, 96.30.s Предмет и цель работы: Предметом исследования являются особенности изменения амплитуды инфразвуковой волны, распространяющейся в атмосфере Земли на глобальные расстояния. В качестве мощного источника инфразвуковой волны выб",
"url": "https://doi.org/10.15407/rpra23.02.094",
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"source": "THE TUNGUSKA EXPLOSION OF 1908 | The Institute for Creation Research",
"text": "The last theory as to the cause of the Tunguska event is proffered by Jackson and Ryan (1973). They suggest that a black hole with a mass of 1022 to 1023 g would have the necessary energy (1023 ergs) to have caused the Tunguska destruction.",
"url": "https://www.icr.org/research/index/researchp_sa_r05/",
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"source": "Tunguska: a cosmic airburst paradigm, how we investigate ...",
"text": "Ukraine, (2000) On the Origins of Earth-Approaching Asteroids, Vol 35, No 3, 2001, ... Tunguska 1908, Vol 3, 2003, pp. 545-554, Chinese Journal of Astronomy and · Astrophysics. 12 Boslough, M.B.E., Crawford D.A., Sandia National Laboratories, USA, (2008), Low-",
"url": "https://britastro.org/wp-content/uploads/sites/Tunguska_Airburst.pdf",
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"source": "The Year a Serious Physics Journal Proposed a Black Hole Did It",
"text": "Sources: Tunguska event — Wikipedia; Britannica; NASA “115 Years Ago” retrospective; Jackson & Ryan, “Was the Tungus Event Due to a Black Hole?”, Nature (1973); Beasley & Tinsley, “Tungus Event Was Not Caused by a Black Hole,” Nature (1974).",
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"source": "The Tunguska explosion rocked Siberia 118 years ago",
"text": "Some concocted wild theories to explain the Tunguska event. People claimed a stricken alien spacecraft caused the destruction. Later, they pointed to a mini-black-hole or a particle of antimatter.",
"url": "https://earthsky.org/space/what-is-the-tunguska-explosion/",
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"source": "The Tunguska Event Cause: Unraveling 8 Mind-Blowing Theories ☄️ - History Hidden",
"text": "While some fringe theories propose a microscopic black hole or antimatter explosion, there is no credible scientific evidence supporting these ideas. The event’s characteristics—such as the chemical signatures and blast pattern—are consistent ...",
"url": "https://www.historyhidden.org/the-tunguska-event-cause/",
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"source": "Physicists Once Proposed The Tunguska Event Was Caused By A Black Hole Passing Through The Earth | IFLScience",
"text": ""Because of its high velocity and because it loses only a small fraction of its energy in passing through the Earth, the black hole should very nearly follow a straight line through the Earth, entering at 30° to the horizon and leaving through the North Atlantic in the regio",
"url": "https://www.iflscience.com/physicists-once-proposed-the-tunguska-event-was-caused-by-a-black-hole-passing-through-earth-74813",
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"source": "Was the Tunguska event caused by a black hole? | indy100",
"text": "In fact, some experts have even suggested that mini primordial black holes, smaller than an atom, could be passing harmlessly through Earth on a daily basis. Then, in a 1973 paper, published in the journal Nature, a team of physicists based ...",
"url": "https://www.indy100.com/science-tech/tunguska-event-black-hole-2674262442",
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"source": "The Tunguska Event: Meteor, Comet, or a 1908 Miniature Black Hole? - Malorie's Adventures",
"text": "In 1973, physicists Albert Jackson and Michael Ryan from the University of Texas proposed that Tunguska was caused by a primordial black hole. The idea is that a black hole with the mass of a large asteroid, but compressed into the size of an ...",
"url": "https://www.maloriesadventures.com/blog/the-tunguska-event-meteor-comet-or-a-1908-miniature-black-hole",
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"source": "Tunguska event - Wikipedia",
"text": "↑ "115 Years Ago: The TunguskaAsteroid Impact Event". nasa.gov. NASA. 30 June 2023. Retrieved 29 April 2026. ↑ Kresak, L. (1978). "The Tunguska Object: a Fragment of Comet Encke?&",
"url": "https://en.wikipedia.org/wiki/Tunguska_event",
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"source": "(PDF) Detectable seismic consequences of the interaction of A primordial black hole with Earth",
"text": "We predict the emergence of two unique signatures, namely, a wave that would arrive almost simultaneously everywhere on Earth's free surface and the excitation of unusual spheroidal modes with a characteristic frequency spacing in free oscillation spectra. These qualitative ",
"url": "https://www.researchgate.net/publication/221710745_Detectable_seismic_consequences_of_the_interaction_of_A_primordial_black_hole_with_Earth",
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"source": "(PDF) Can one detect passage of a small black hole through the Earth?",
"text": "To summarize, the seismic signal of the passage of a light black hole through the Earth in the frequency interval · 1 ÷ 100 Hz is strongly dominated by the sound Cherenkov radiation, and its total energy in this interval can be ...",
"url": "https://www.researchgate.net/publication/1770966_Can_one_detect_passage_of_a_small_black_hole_through_the_Earth",
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"source": "Photos of the Tunguska blast from the 1921-29 expeditions. Near the... | Download Scientific Diagram",
"text": "... has been some debate over whether ... 10 shows all the possible meteors which could deliver 10 Mt of energy to an altitude of 10 km as a nominal Tunguska blast....",
"url": "https://www.researchgate.net/figure/Photos-of-the-Tunguska-blast-from-the-1921-29-expeditions-Near-the-presumed-epicenter_fig1_328414457",
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"source": "3D Effects of Tunguska Event on the Ground and in Atmosphere | Request PDF",
"text": "... To read the full-text of this research, you can request a copy directly from the authors. ... ... The event has been estimated to have released 5 -20 Mt of energy at an altitude between 5 and 15 km (e.g. Chyba et al. , 1993 ;Shuvalov and ...",
"url": "https://www.researchgate.net/publication/234386120_3D_Effects_of_Tunguska_Event_on_the_Ground_and_in_Atmosphere",
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"source": "Numerical modeling of Tunguska-like impacts | Request PDF",
"text": "Artemieva and Shuvalov (2016) provide the most current review of recent Tunguska studies, and Vasilyev (1998), Trayner (1997), and Sekanina (1983) provide useful synopses of prior analyses and their findings. ... ... Modeling and simulation approaches employed to study the Tungus",
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"source": "(PDF) The Tunguska Event",
"text": "Ben-Menahem A (1975) Source parameters of the Siberian explosion of June 30, 1908, from analysis and · synthesis of seismic signals at four stations.",
"url": "https://www.researchgate.net/publication/282256596_The_Tunguska_Event",
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"text": "Over the past century, Tunguska has attracted an unusual density of fringe theories: A miniature black hole passing through Earth (first proposed in a 1973 Nature paper and widely dismissed — an exit event over the Atlantic has never been ...",
"url": "https://www.infinityexplorers.com/tunguska-event-largest-explosion-recorded-history/",
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