Why flat earthers struggle to explain solar eclipses and what scientists say

January 28, 2026

As millions of people anticipate the total solar eclipse on April 8, 2024, a curious trend emerges: the resurgence of flat Earth theories that attempt to reinterpret this celestial phenomenon. While scientists provide a thorough and universally accepted explanation for how solar eclipses occur—namely, the alignment of the Earth, Moon, and Sun—flat Earth proponents often find themselves grappling with a lack of coherent alternatives. Their claims, which largely ignore established scientific principles, invite scrutiny not only of their understanding of astronomy but also of their broader distrust in the scientific community.

The solar eclipse presents a remarkable display, casting a moving shadow across the Earth’s surface and prompting questions about our planet’s curvature. For flat earthers, the inability to reconcile this event with their beliefs often leads to convoluted arguments that fall short of scientific scrutiny. They contend that the Moon’s shadow moves contrary to expected astronomical patterns, suggesting a fundamentally different dynamic that dismisses empirical evidence in favour of their hypotheses. Yet, these arguments fail to engage with the intricacies of celestial mechanics that define how eclipses occur.

Understanding Solar Eclipses: A Scientific Explanation

In essence, a solar eclipse takes place when the Moon transpires directly between the Sun and the Earth, casting a shadow that partially or fully obscures the Sun from view. This alignment is precise and occurs only during a new moon phase, where the orbit of the Moon intersects the plane of the Earth and Sun. The mechanics behind this phenomenon are well documented and supported by centuries of astronomical observation and study.

NASA has emphasized that during a total solar eclipse, the Moon’s distance from the Earth and the substantial scale of the Sun and Moon create a narrow path where the eclipse can be viewed in totality. The fascinating aspect lies in the speed of the Moon’s orbit, which can move at more than 3,000 kilometres per hour, significantly impacting the motion of the eclipse’s shadow across the Earth. This interplay of motion is where flat earther arguments falter, as they often fail to consider these critical variables.

Flat Earther Arguments: Misconceptions and Mystifications

Despite the clarity of scientific explanations, flat earthers present several intriguing arguments regarding solar eclipses. They claim the size of the eclipse shadow is too small to be compatible with a spherical earth, a misconception stemming from flawed logic and experimental setups that do not reflect the reality of astronomical distances. They often argue that shadows should be proportionate in size, which oversimplifies the complex relationship between the Sun, Moon, and Earth.

Another point of contention revolves around the apparent movement of the eclipse shadow from west to east. Flat earthers assert this movement indicates the Sun travels in a fixed path, suggesting a stationary Earth theory. However, scientific consensus clarifies that the rotation of the Earth causes this apparent motion; as the Earth spins, the much faster-moving Moon’s shadow crosses various terrains.

The Psychological Underpinnings of Flat Earth Beliefs

The persistence of flat Earth theories can often be traced back to deeper psychological needs. Researchers highlight that individuals drawn to conspiracy theories may be seeking certainty in an uncertain world, a desire for knowledge that empowers them against overwhelming scientific consensus. The surge in such beliefs, particularly during periods of societal change, reflects a compelling need for control amid discomforting realities.

This mindset can lead to an unhealthy scepticism of science and credibility in institutions, exacerbating isolation from mainstream scientific dialogue. For parents and educators, understanding these motivations is crucial in fostering critical thinking and scientific literacy in youth.

The Importance of Scientific Literacy

As experts prepare for the 2024 eclipse, it is vital to reinforce the fundamentals of scientific education and understanding. Clear communication of how celestial events work—in both local and global contexts—can combat misinformation effectively. Encouraging curiosity about astronomy not only enriches knowledge but also cultivates a respect for scientific methodologies that have stood the test of time.

In a world increasingly influenced by disinformation, the challenge lies not merely in debunking myths but also in inspiring an appreciation for the complexities of our universe. As the Earth takes its place in the shadow of the Moon, it reminds us of the intricate dance of celestial bodies that continue to amaze and educate.