Globe Earth and Flat Earth: A Comparative Investigation

Before you shout me down saying “it’s been scientifically proven that earth is a globe, no point even going there” … what if the most interesting question isn't whether Earth a globe or flat?" but "How do we know?" Explore books, observations, experiments, historical arguments and institutional influences behind both perspectives - what happens when an established model is questioned?

This is intended as an open-minded exploration of the Globe Earth and Flat Earth viewpoints, rather than an attempt to prove or disprove either position.

The purpose is to place books representing the different perspectives alongside one another and to consider not only their arguments and evidence, but also the history of the debate and the institutional, financial and cultural influences that often shape scientific consensus.

The conventional scientific model describes Earth as approximately spherical, more precisely an oblate spheroid. The evidence traditionally presented in support of this model comes from astronomy, geodesy, navigation, surveying, physics, geology and observations made using aircraft, satellites and spacecraft.

A detailed history of attempts to determine Earth’s size and shape, from ancient measurements through modern geodesy and satellite techniques. It is particularly useful for examining how Earth’s dimensions have been measured and calculated, rather than simply being told that Earth is spherical.

Explores the historical development of the spherical-Earth concept and the ideas and observations that contributed to its acceptance.

A conventional Earth-science textbook covering Earth’s physical structure, geology and geological processes.

A university-level treatment of Earth science and geophysics, including Earth’s physical characteristics and internal structure.

An accessible introduction to astronomy, Earth’s place within the solar system and the wider universe.

An accessible introduction to astronomical observations and the conventional astronomical model.

Flat Earth literature challenges the conventional spherical model and often places greater emphasis on direct observation, geometry, experimentation and questioning the assumptions underlying the Globe model.

Several of the works below are historical primary sources, allowing the reader to encounter the arguments themselves rather than relying on modern descriptions of what Flat Earth proponents believe.

One of the most important nineteenth-century Flat Earth texts.

Rowbotham presents observations and experiments concerning the horizon, water and its apparent level, perspective, distant objects, the Sun and Moon, stars, eclipses, Earth’s alleged movement, surveying and long-distance observations.

A classic nineteenth-century Flat Earth work presenting 100 separate arguments challenging the spherical-Earth model.

The arguments address subjects including the horizon, water, astronomy, surveying, perspective and navigation.

Particularly useful for a comparative investigation because individual propositions can be examined one by one, rather than treating Flat Earth as a single proposition.

Presents an alternative cosmological model based around a stationary plane Earth.

Combines Biblical, geographical and geometrical arguments questioning the Globe model.

A twentieth-century attempt to present a systematic case against the spherical-Earth model.

Presents arguments based upon Scripture, observation and reasoning.

A modern presentation of Flat Earth arguments, including many of the observations and challenges found in earlier literature.

A modern compilation of arguments questioning the Globe model as well as the institutions and assumptions associated with it.

The Library of Congress Flat Earth research guide provides a useful starting point for locating historical literature and research concerning the subject. Library of Congress — Flat Earth Research Guide

The debate is about how ideas develop, how scientific consensus forms, and how historical beliefs are subsequently represented.

A historical examination of Flat Earth ideas and their proponents.

Examines the historical claim that medieval Europeans generally believed the Earth was flat and questions some of the assumptions surrounding that narrative.

Includes discussion of the historical “Flat Earth” misconception and the way medieval beliefs have subsequently been represented.

A sceptical examination of scientific claims, including Flat Earth arguments.

This category provides an opportunity to examine the history of the disagreement itself.

Another question is whether money, government funding, commercial interests, institutional reputation, professional incentives or political interests can influence which scientific ideas receive attention.

This question is a broader question about the relationship between science, institutions, funding and power.

Examines the increasing influence of commercial interests on scientific research.

A foundational work examining scientific paradigms and the circumstances in which established scientific frameworks persist or undergo significant change.

It provides useful context for considering how difficult it may be for an alternative interpretation to gain acceptance when an established paradigm dominates a field.

An important historical document concerning government support and funding of scientific research and the relationship between science and the state.

Examines historical examples in which organised interests sought to influence public perceptions of scientific questions.

Explores interactions between corporate interests, ideology and public understanding.

Examines public relations, corporate interests and presentation of independent expertise.

These books provide material for asking a broader question:

To what extent can financial, political or institutional interests influence what scientific questions are investigated, funded, published, taught or accepted?

That question is relevant to scientific inquiry generally, regardless of one’s position on Earth’s shape.

Rather than beginning with the question “Which side should I believe?”, perhaps examine the individual observations and claims on which the two models differ.

The Globe Earth model predicts measurable curvature across sufficiently large distances. Flat Earth proponents question whether the curvature claimed from particular observations is actually detectable or whether observations interpreted as curvature can be explained in other ways. The useful question is what has actually been measured, under what conditions, and whether the measurement can be independently reproduced.

From the Globe perspective, the horizon represents the geometric limit of visibility created by a curved Earth. From the Flat Earth perspective, the apparent flatness of the horizon, particularly from ordinary elevations, requires explanation. The comparison involves observation and assumptions used to interpret what the eye or camera records.

The disappearance of distant ships, buildings or other objects is commonly explained within the Globe model by the curvature of Earth’s surface. Flat Earth arguments may instead appeal to perspective, atmospheric conditions, optical effects or limitations of observation. A useful investigation would consider the original observation, the distance involved, the height of the observer and object, atmospheric conditions and whether the result can be repeated.

The Globe model explains the apparent level of lakes, seas and oceans within a gravitational and geometric model of Earth. Flat Earth literature places considerable emphasis on the apparent level of large bodies of water and asks why water appears flat rather than visibly curved. Here again, the interesting issue is not simply the claim but how “level”, “flat” and “curved” are being defined and measured.

The Globe model explains changes in the visible night sky with latitude through the geometry of a spherical Earth. Flat Earthers question whether the same observations necessarily require a spherical Earth and propose alternative interpretations. This provides an opportunity to examine what observers actually see when travelling north or south and which model most successfully predicts those changes.

Within the mainstream model, the apparent movements of the Sun and Moon are explained through Earth’s rotation, its orbit and the Moon’s orbit. Alternative models propose different explanations for their apparent paths, distances and behaviour. Comparing the predictions of the competing models can be more informative than comparing diagrams or assertions.

The conventional explanation is that lunar eclipses occur when Earth comes between the Sun and Moon and Earth’s shadow falls across the Moon. Flat Earth literature questions aspects of this explanation and proposes alternatives. The question for investigation is whether the competing explanations can account for the timing, appearance and geometry of eclipses and make predictions that can be independently tested.

Modern navigation is generally calculated using spherical or ellipsoidal models of Earth. Flat Earth literature has raised questions about particular routes, distances and navigational practices. This is therefore an area where the competing models can potentially be compared quantitatively: what distance and route does each model predict, and which corresponds with independently verifiable observations?

Conventional geodesy uses measurements of angles, distances, gravity and Earth’s shape to construct models of the planet. Flat Earth arguments challenge measurements / interpretation. This makes surveying interesting because it provides the possibility of examining physical measurements rather than relying solely on photographs or institutional statements.

The conventional model incorporates satellites, orbital mechanics, spacecraft observations and photographs of Earth. Flat Earth proponents question the interpretation, provenance or independence of some of this evidence. A balanced investigation would distinguish between what has been directly observed, what has been photographed or measured, what has been inferred, and the degree to which the evidence can be independently verified.

The most important question concerns experimentation. Both perspectives make claims about observations that they consider significant. The strongest way to examine those claims is to ask whether an experiment can be clearly defined, independently repeated, measured objectively and performed without assuming the conclusion in advance.

A particularly interesting approach would be to take a proposition from 100 Proofs That the Earth Is Not a Globe or Zetetic Astronomy and then look for the corresponding explanation in a conventional astronomy or geodesy text.

For each question, ask: What was actually observed? How was it measured? What does the Globe model predict? What does the Flat Earth model predict?

Are there assumptions underlying either interpretation? Can the observation or experiment be independently reproduced? Does either model make a prediction that can distinguish it from the other?

This approach moves the discussion away from authority versus anti-authority and towards examination of the claims.

The fact that an institution has authority, money or prestige does not automatically make its claims true, but the existence of financial or institutional interests does not automatically make those claims false either.

Science is fundamentally a process of observation, hypothesis, testing, challenge, refinement and, where necessary, revision.

A scientific theory is an explanatory model developed to account for evidence and make predictions. It is not immune from questioning simply because it is established.

At the same time, saying that a theory can be challenged does not mean that competing theories have equal evidential support. A proposition may be perfectly legitimate to investigate while ultimately failing to explain the available evidence as successfully as another proposition.

Both should be open to examination.

The same principle applies to financial and institutional influence. Discovering that an organisation has a financial interest does not invalidate its scientific claims but does highlight conflicts of interest and thus challenging these is valid; conversely, if institutions are completely free from incentives, career pressures or conflicts of interest would also be unrealistic.

The useful question is therefore not simply:

“Who says this is true?”

but:

“What is the evidence, how was it obtained, can it be independently tested, what predictions does the explanation make, and does it withstand serious attempts to challenge it?”

The Globe Earth and Flat Earth debate provides an interesting case study in evidence, observation, scientific models, historical interpretation and the relationship between knowledge and institutions.

Reading both sources / theoretical models, together with historical and institutional literature, provides a wider opportunity to understand why each side believes its interpretation explains the evidence.

The purpose of this is to simply ask questions, examine claims, challenge assumptions and understand how competing explanations are constructed.

Science is a process of observation, hypothesis, testing, challenge, refinement and, where necessary, revision. Scientific theories are explanatory models that are intended to account for evidence and make predictions, and they should remain open to testing and potential falsification.

The purpose of investigation is precisely to discover where the evidence leads.

The Globe and Flat Earth positions can both be examined without beginning with the assumption that either is beyond question. The Globe model can be challenged; the Flat Earth model can be challenged; individual experiments, observations and interpretations can be challenged; and claims about institutional or financial influence can likewise be investigated rather than simply assumed.

In the end, the most useful question is not “Which side am I supposed to believe?” but “What can I independently observe, test and verify—and which explanation best withstands the challenge?”