There are many non-stop, long-haul flight routes between different continents in the southern hemisphere, without crossing the northern hemisphere. These routes are only possible if Earth is a sphere, and impossible if Earth is flat.
Flat-Earthers claim that all long-haul flights south of the Equator always do a stop north of the Equator. In reality, there are plenty of non-stop routes between these locations, showing that Earth is a sphere.
Continue reading “Non-Stop, Long-Haul Flight Routes in the Southern Hemisphere”
The lost world is a genre of fiction involving the discovery of an unknown world, popular in the late 1800s and early 1900s when the remnants of lost civilizations were being discovered by westerners. However, newspapers of the era often published such works in a way it might not be obvious that these are just works of fiction.
In 1907, the Hawaiian Gazette published one of such works titled “Was This World Map Made Ten Centuries Ago,” illustrated with the so-called Kobayashi map, for a more powerful story. Flat-Earthers fail to realize it was a work of fiction that was common in the era. The tale & the Kobayashi map spread in flat-Earth communities as a hoax.
Continue reading “Hawaiian-Japanese-Buddhist Flat-Earth Map by Dr. Kobayashi”
Flat-Earthers copied the shape of the azimuthal equidistant map centered on the North Pole and claim it as their “flat-Earth map.” The real azimuthal equidistant map is not the so-called “flat-Earth map, and not necessarily centered on the North Pole.
On the azimuthal equidistant map, all points on the map are at proportionally correct distances from the center point, but only from the center point. Other distances are distorted.
Continue reading “Center of the Azimuthal Equidistant Map Projection”
The flag and emblem of the United Nations is a map of the world in the azimuthal projection centered on the North Pole. Flat-Earthers wrongly claim that the UN uses the so-called “flat-Earth map” in their emblem and use it as “evidence” that the UN “knows Earth is flat.”
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Muslims perform their prayers by facing the Qibla —or the direction to the Kaaba in Mecca, Saudi Arabia. The Qibla direction is traditionally determined from the direction to the Sun when the Sun is directly overhead the Kaaba. If the Sun is visible during that time, it will indicate the direction of the Qibla.
If the observation results are drawn on the so-called ‘flat-Earth map,’ the Qibla will not consistently point to the Kaaba. Only calculations using the spherical Earth model will give us consistent results that agree with centuries of observation from various locations on Earth. The Qibla proves Earth is a sphere.
Continue reading “Qibla Direction Proves Earth is a Sphere”
The second voyage of James Cook was commissioned to search for the hypothetical continent Terra Australis in the Southern Pacific Ocean. He explored the Pacific and Atlantic oceans in the process and proved there is no such continent unless it is over the South Pole itself, which we now call Antarctica.
Some sources stated that Cook traveled over 60000 miles in his second voyage. Flat-Earthers use the figure as Antarctica’s circumference and claim it as “evidence” that Antarctica is much more than a continent. In reality, James Cook explored the vast ocean and did much more than just circumnavigating Antarctica.
Continue reading “James Cook’s Second Voyage”
Polar circumnavigation is complete navigation around Earth through both the North Pole and the South Pole. Several parties have successfully done it, and it is only possible if Earth is a sphere.
Flat-Earthers incorrectly claim that Earth circumnavigation has never been done through both the poles, and they use it to “prove” a flat Earth. In reality, many have successfully done such feats.
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Antarctica is the fifth-largest continent, but on a Mercator map, it can appear larger than all the other continents combined due to the map’s distortion characteristic.
Flat-Earthers regard such “size discrepancy” as a failure of science to describe the world. In reality, map distortion also causes Antarctica’s huge size compared to other continents in the azimuthal equidistant map which they falsely claim as the so-called “flat-Earth map”.
Continue reading “Distortion of Antarctica on Maps”
The Blue Marble is an image of Earth taken by the crew of the Apollo 17 spacecraft on its way to the Moon. It was taken from a distance of 29000 km from Earth’s surface.
Flat-Earthers dismiss it by incorrectly asserting that the image covers a too-small area of Earth’s surface, due to their failure to account for the maps’ distortion.
Continue reading “Blue Marble and the Visible Area of Earth’s Surface”
The azimuthal equidistant map is a valid map. The map is a projection of the spherical Earth. Like every other map, it has distortions. It is not the “flat-Earth map,” and the usage of the azimuthal equidistant map does not endorse a flat Earth.
Flat-Earthers claim the shape of the polar azimuthal equidistant map as their own “flat-Earth map.” It is identical with the azimuthal equidistant map only in shape, but not in everything else. Unlike the azimuthal equidistant map, the so-called “flat-Earth map” does not represent reality.
Continue reading “The Polar Azimuthal Equidistant Map is NOT the Flat Earth Map”
Greenland is 1/14th the size of Africa. However, in a map with the Mercator projection, it appears the same size due to the distortion characteristics of the Mercator projection.
Flat-Earthers claim the distortion of the Mercator map is a failure of science to describe the world. In reality, distortion is a consequence of flattening a 3D shape into flat 2D media. Distortion also occurs with the azimuthal equidistant map, which is claimed by flat-Earthers as the so-called “flat-Earth map.” All maps have distortions: it is incorrect to assume the azimuthal equidistant map is distortion-free.
Continue reading “Distortion of Greenland on Maps”
The azimuthal equidistant projection is a projection of the spherical Earth. As a result, a map using this projection has distortions in distances, shapes, directions, and areas. Just like the azimuthal equidistant map, all other types of maps have their distortion characteristics.
In the illustration, the eight yellow dots indicate a location 5000 km from the red dot, toward all the cardinal directions and the intermediate directions. We can see that the distances, shapes, directions, and areas are distorted in some way depending on the location on the map.
Continue reading “Distortions of the Azimuthal Equidistant Map”
Google Maps live traffic works by crowdsourcing. It determines the current traffic by aggregating information sent by many phones carried by many different traveling users.
In February 2020, artist Simon Weckert successfully gamed the system and faked a traffic jam in Google Maps. He did that by pulling a cart full of active phones and walking in the middle of roads. Google Maps system thought there were many slow-moving cars on the road and regarded that as a traffic jam. As a result, during Simon’s operation, an empty road appeared as dark red in Google Maps, as if a traffic jam was ongoing.
Flat-Earthers claimed that it proves that satellites do not exist; possibly because they did not know how the system works. It might be that they previously thought the traffic data was obtained directly from satellite imagery. In reality, satellite navigation systems, like the GPS, is very much involved in the system.
Continue reading “Google Maps Live Traffic and Simon Weckert’s Virtual Traffic Jam”
Flat-Earthers discovered a map titled “Air Map of the World” from 1943, explaining the flight routes during the time. Because the shape is identical to the fictional “flat Earth map,” they incorrectly claimed that it is a flat-Earth map. In reality, it is an azimuthal equidistant map that has distortions, a flattened shape of the spherical Earth on a flat surface, and does not depict the true shape of the Earth.
The exact nature of the map is even explained in a very detailed manner in the map’s description. Unfortunately, in the flat-Earth community, the map is passed around in a very low resolution, and therefore, the explanations become unreadable.
Continue reading “Air Map of the World 1943/1945”
The Earth is a sphere, a three-dimensional shape. But in most cases, we work with two-dimensional media, including paper, computer displays, televisions, phone screens, whiteboards, etc. To represent the Earth on a two-dimensional medium, it is necessary to transform the curved shape of Earth’s surface into a planar form using one of the many map projections.
All map projections necessarily introduce distortion into the results. Some flat-Earthers think that distortions are ‘evidence’ of failure of modern science to explain the world. In reality, the distortions are simply a consequence of transforming the curved surface into a planar form. It is impossible to create a map without distorting it in some fashion, the same way it is impossible to perfectly flatten a ball without cutting it.
Continue reading “Map Projections and Distortions”
Some flat-Earthers noticed some flights from Perth to Johannesburg have a flight change in Dubai. They use the fact to ‘prove’ a flat Earth. In reality, there are non-stop flights of the same route that are impossible to explain if the Earth is flat.
With a flight change in Dubai, the flight takes more than twice as long, as Dubai is nowhere near the non-stop flight path. In fact, Perth–Dubai is a longer hop than the direct Johannesburg–Perth route. These are consistent only with a spherical Earth and can never be explained if the Earth is flat.
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A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning. Several satellites continuously transmit signals containing their positions and the time when the signal was sent. Receiver units listen to the signals and use the information to calculate their positions.
Flat-Earthers assume that if GPS satellites are used to determine positions, then they should be able to pinpoint the position of a receiver. They are wrong. GPS satellites only transmit signals but never receive signals from the receivers. It is impossible for the satellites to determine the position of a receiver.
Continue reading “How GPS and Other Satellite Navigation System Work”
There was a flight from Taiwan to Los Angeles that was diverted to Anchorage because one of the passengers gave birth to a baby. Flat-Earthers use the case as one of the first “evidence” from flight routes proving Earth is flat.
They are wrong. The case only tells us about the ignorance of these flat-Earthers about the distortion in a map projection. Their argument started with an elementary mistake of taking a straight line on a Mercator map between Taiwan and Los Angeles, and assume it as the “intended flight path.”
Continue reading “The Taiwan–Los Angeles Flight (not from Bali) that was Diverted to Anchorage”
Astrolabe is an astronomical instrument for measuring the altitude of the sun or stars, and to determine the solution of various problems in astronomy, time, and navigation. Astrolabe was used from classical antiquity, about 2nd century BC, until the age of discovery where it was superseded by the more accurate sextant, star charts, and time-keeping devices.
Flat-Earthers claim that astrolabes can only work because the Earth is flat. They are wrong. Astrolabes were designed using the spherical Earth model. To use an astrolabe, a good understanding of the spherical Earth model is required.
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The perpetrators of flat-Earth often take emergency landings as ‘proof’ of a flat Earth. They would point out that the diversion airports used for such emergency landings are somehow consistent with the flat-Earth map.
It is not a coincidence that all the cases of emergency landing they pointed out occurred far in the north. At the locations closer to the north pole, the distortion of the azimuthal-equidistant map (claimed by flat-Earthers as the ‘flat-Earth map’) diminishes. It would seemingly appear as if the ‘flat-Earth map’ can explain the choice of the diversion airports. In many other locations, though, the flat-Earth map would fail to explain it.
Continue reading “The Failure of Flat-Earth Model to Explain Emergency Landings That Occur More to the South”