Trending Scientific Theories in Japan — September 2026
The 100 most-viewed scientific theories on Wikipedia, September 2026 (Japanese-language edition). Ranked by real-world attention. Top: Big Bang. Data as of 28 October 2026.
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- September 2026 · Data as of 28 October 2026
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- 100 scientific theories — drawn from 1,411,216 articles Wikipedia recorded views for in this window
This counts a Wikipedia language edition, not a country's residents — Measured from the Japanese-language Wikipedia edition — readers worldwide, not residents of Japan. Nothing here is capped or sampled: it is every view Wikipedia published for these articles in the window. Rows carrying a 📰 badge add news coverage from GDELT; entity names and types come from Wikidata. Looking for what one country read? That is what the world reads — a different, capped measurement.
Where this data comes from ›100
Ranked
103,917
Total Views (September 2026)
1
Big Bang
hypothetical begin of the Universe through expansion out of an infinitely small and infinitely dense state
7,301
views
views
2
heliocentrism
astronomical model in which the Earth and planets revolve around a relatively stationary Sun at the center of the Solar System
5,830
views
views
3
anarchism
a philosophy, movement, and political ideology that holds that any government, like the state, is undesirable, unnecessary, and harmful
5,586
views
views
4
theory of relativity
two interrelated physics theories by Albert Einstein
5,386
views
views
5
uncertainty principle
fundamental principle in quantum physics
4,612
views
views
6
Coriolis force
apparent or fictitious force on objects moving within a reference frame that rotates with respect to an inertial frame
4,595
views
views
7
flat Earth
archaic conception of the Earth's shape
4,293
views
views
8
Fermi paradox
apparent contradiction between the lack of evidence and high probability estimates for the existence of extraterrestrial civilizations
4,284
views
views
9
Dyson sphere
hypothetical megastructure, originally described by Freeman Dyson
3,965
views
views
10
race
nonscientific human classification system primarily based on physical appearance
3,849
views
views
11
general relativity
standard and classical physics theory of gravity and space
3,830
views
views
12
special relativity
physical theory of measurement in an inertial frame of reference proposed in 1905 by Albert Einstein
3,797
views
views
13
emperor organ theory
constitutional theory that was the prevailing interpretation of the Constitution of the Empire of Japan until it became the subject of political attacks in 1935
2,435
views
views
14
miasma theory
obsolete medical theory about the transmission of disease through bad air
2,122
views
views
15
infrared radiation
electromagnetic radiation with longer wavelengths than those of visible light
2,116
views
views
16
Einstein field equations
field equations in general relativity
2,025
views
views
17
accelerationism
political philosophy that the prevailing system of capitalism should be expanded in order to generate radical social change
1,959
views
views
18
spherical Earth
assertion that the Earth is (at least approximately) spherical
1,309
views
views
19
continental drift
movement of Earth's continents relative to each other
1,253
views
views
20
boson
quantum system invariant by exchange of two identical instances
1,217
views
views
21
meritocracy
political system in which capital is assigned on the basis of competence
1,202
views
views
22
Bose–Einstein condensate
state of matter of a dilute gas of bosons cooled to temperatures very near absolute zero
1,194
views
views
23
constitutionalism
political and legal thought holding that government authority derives from and is limited by fundamental law, emphasizing the protection of rights
1,156
views
views
24
spontaneous generation
disproven theory of life arising from nonliving matter
1,067
views
views
25
trickle-down economics
economic theory
993
views
views
26
Realism
international relations theory
968
views
views
27
bricolage
construction or creation of a work from a diverse range of things that happen to be available, or a work created by such a process.
843
views
views
28
Dirac sea
ground state of a fermionic field; thought of as a "sea" of negative-energy states that have been all filled in, thus rendering the vaccum stable
811
views
views
29
phlogiston theory
superseded scientific theory about combustion
785
views
views
30
Pauli effect
supposed tendency of technical equipment to fail in the presence of certain people
760
views
views
31
principal–agent problem
conflict of interest when one agent makes decisions on another's behalf
684
views
views
32
Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era
a political theory attributed to Xi Jinping, the General Secretary of the Chinese Communist Party
680
views
views
33
Kurgan hypothesis
theory of Indo-European origin
635
views
views
34
domino theory
theory concerning the influence of Communism
572
views
views
35
gateway drug theory
substance-related disorder
567
views
views
36
Penrose process
theorical process wherein energy can be extracted from a rotating black hole
537
views
views
37
insanity
abnormal mental or behavioral patterns
503
views
views
38
Lamarckism
hypothesis that an organism can pass on characteristics that it has acquired through use or disuse during its lifetime to its offspring
495
views
views
39
vitalism
discredited scientific hypothesis
489
views
views
40
Madman theory
feature of Richard Nixon's foreign policy
487
views
views
41
Plasma cosmology
480
views
views
42
Interactions Between Heaven and Mankind
Concept for choosing a monarch
454
views
views
43
rotating black hole
black hole with angular momentum
440
views
views
44
imperial sovereignty theory
438
views
views
45
Theory of the Undetermined Status of Ryukyu Islands
legal theory about the Ryukyu Islands
428
views
views
46
Ainu Revolution Theory
theory in Japanese left-wing thought
427
views
views
47
probability axioms
axioms that are relevant to the probability theory
426
views
views
48
Kelvin–Helmholtz instability
fluid instability that occurs when there is velocity shear in a single continuous fluid or a velocity difference across the interface between two fluids
422
views
views
49
big lie
gross distortion or misrepresentation of the truth
407
views
views
50
voting paradox (Condorcet)
Marquis de Condorcet's observation regarding times when voters' collective preferences are cyclic, even when voters' individual preferences are not
395
views
views
51
Darwinism
theory of biological evolution driven by natural selection
393
views
views
52
caloric theory
obsolete scientific theory of heat flow
391
views
views
53
eating rice makes you stupid
359
views
views
54
axial tilt
angle between the rotational axis and orbital axis of a body
352
views
views
55
capability approach
economic theory
333
views
views
56
Duverger's law
principle in political science
329
views
views
57
History of atomic theory
history of scientific theory that views matter as made up of atoms of chemical elements
329
views
views
58
Cassini Division
gap in the rings of Saturn
327
views
views
59
Neo-Darwinism
the current paradigm in evolutionary biology
326
views
views
60
Socialism in One Country
political theory by Joseph Stalin
324
views
views
61
Secular Shrine Theory
Japanese idea on the separation of Church and State
310
views
views
62
neorealism
concept in international relations
305
views
views
63
Three Worlds Theory
Maoist interpretation and formulation of international relations
301
views
views
64
band theory
model of electronic structure in solids
298
views
views
65
free energy principle
hypothesis in neuroscience proposed by Karl Friston
294
views
views
66
iron law of oligarchy
Political theory claiming that all organizations will eventually become oligarchic
288
views
views
67
functionalism
social science
284
views
views
68
Fermi–Dirac statistics
behaviour of many identical fermions, particles with half-integer spin
278
views
views
69
killer ape theory
theory that war and interpersonal aggression was the driving force behind human evolution
274
views
views
70
von Mises yield criterion
concept in continuum mechanics
272
views
views
71
Brønsted–Lowry acid–base theory
chemical theory defining acids and bases by transfer of protons (hydrons)
269
views
views
72
kinetic theory
mathematical model explaining macroscopic properties of gases in microscopic terms
267
views
views
73
withering away of the state
concept coined by Engels that, with the realization of socialism, the state will become obsolete and disappear as the society will govern itself without coercive enforcement of the law
264
views
views
74
Gallicanism
the belief that popular civil authority—often represented by the monarchs' authority or the state's authority—over the Catholic Church is comparable to that of the Pope's
251
views
views
75
Penrose diagram
two-dimensional diagram that captures the causal relations between different points in spacetime
242
views
views
76
refrigerator mother theory
discredited historical theory that autistic spectrum disorders are caused by a lack of parental emotional warmth
241
views
views
77
Schwarzschild black hole
239
views
views
78
insular biogeography
field within biogeography that examines the factors that affect the species richness and diversification of isolated natural communities
219
views
views
79
Boveri–Sutton chromosome theory
theory
216
views
views
80
Alpher–Bethe–Gamow theory
scientific theory
214
views
views
81
orthogenesis
obsolete biological hypothesis that organisms have an innate tendency to evolve towards some goal
208
views
views
82
Jahn–Teller effect
mechanism of spontaneous symmetry breaking in molecular and solid-state systems
198
views
views
83
N ray
hypothesized form of radiation, described by Prosper-René Blondlot in 1903 but subsequently found to be illusory
196
views
views
84
didymium
chemical compound
191
views
views
85
East Asian Cooperative Sphere
190
views
views
86
Petzval field curvature
optical aberration
188
views
views
87
germ theory of disease
prevailing theory about the cause of infectious diseases
185
views
views
88
cell theory
scientific theory that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells
183
views
views
89
round heaven and square earth
182
views
views
90
third-party punishment
theory applicable to biology, anthropology, and sociology
181
views
views
91
optical aberration
phenomenon in astronomy
178
views
views
92
democratic peace theory
theory which posits that democracies are hesitant to engage in armed conflict with other identified democracies
177
views
views
93
Fresnel diffraction
diffraction
176
views
views
94
Multiple streams framework
Approach for analyzing public policymaking processes
176
views
views
95
progressive utilization theory
socioeconomic and political theory
172
views
views
96
Clausius–Duhem inequality
thermodynamic law expression
170
views
views
97
liberalism
school of thought within international relations theory
170
views
views
98
Bose-Einstein statistics
statistical description for the behaviour of bosons
168
views
views
99
Minkowski diagram
graph of space and time in special relativity
167
views
views
100
Garbage can model
theory of organizational decison-making
163
views
views