The Lake Pontchartrain power transmission pylons demonstrate Earth’s curvature. Flat-Earthers invented various excuses to dismiss the observation, including the excuse that it was just a perspective effect.
If it were just a perspective effect, the same parts of the pylons would line up in a straight line, converging into a distant point. In reality, they do not line up in a straight line but are visibly curving downward due to the curvature of the Earth.
If it were just a perspective effect, the same parts of the pylons would line up in a straight line, converging into a distant point. In reality, they do not line up in a straight line but are visibly curving downward due to the curvature of the Earth.
A hoax in flat-Earth circles claims that Earth in the Earthrise photo taken by Apollo 8 is identical to a similar photo taken by Apollo 11. In reality, they are clearly not identical at all.
It might have been caused by an error by an online source or someone trolling flat-Earthers. However, it demonstrates flat-Earthers’ lack of critical thinking, as it can be easily shown the claim is false by finding the originals from NASA’s image archive.
It might have been caused by an error by an online source or someone trolling flat-Earthers. However, it demonstrates flat-Earthers’ lack of critical thinking, as it can be easily shown the claim is false by finding the originals from NASA’s image archive.
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Earth’s magnetic field does not only align horizontally but also has a vertical component. The closer to the magnetic poles, the steeper the dip angle. A dip circle can be used to measure this dip angle. It is basically a compass for the vertical direction.
Compass points horizontally and flat-Earthers wrongly use it as “evidence” of a flat Earth. In reality, a compass is balanced to counter the effect of magnetic dip. We can use a dip circle to measure the actual dip angle of the Earth’s magnetic field.
Compass points horizontally and flat-Earthers wrongly use it as “evidence” of a flat Earth. In reality, a compass is balanced to counter the effect of magnetic dip. We can use a dip circle to measure the actual dip angle of the Earth’s magnetic field.
The photo of Pic Gaspard taken from Pic de Finestrelles is one of the farthest line-of-sight photos of an object on Earth’s surface, taken from another location on Earth’s surface. It is possible to take the photo due to the height of the peaks & atmospheric refraction.
The apparent height of Pic Gaspard relative to the other peaks proves Earth is a sphere. If Earth were flat, Pic Gaspard should appear higher than Grand Ferrand from the observer’s location. Simulations also give us the same results as observation, confirming that it is really what would look like on a spherical Earth.
The apparent height of Pic Gaspard relative to the other peaks proves Earth is a sphere. If Earth were flat, Pic Gaspard should appear higher than Grand Ferrand from the observer’s location. Simulations also give us the same results as observation, confirming that it is really what would look like on a spherical Earth.
Stellarium is a planetarium software. It can render a realistic projection of the sky in real-time and any time in the past or the future, with relatively good accuracy. Stellarium is free software and costs nothing to download. It is freely available for all the major desktop operating systems. In addition, there is a version for mobile phones/tablets, albeit a paid one, and a simpler web-based version.
Stellarium uses the spherical Earth model. If the result produced by Stellarium matches the actual observation, then there is nothing wrong with the spherical Earth model. We can use the app to tell us if it is just an error in the model or an actual discrepancy between observation and expectation. The latter will be much rarer.
Stellarium Using Flat Earth Claim
Some flat-Earthers claim that Stellarium is made using the flat Earth model. However, we can easily prove this wrong by using Stellarium to simulate how the Earth appears from the surface of the Moon:
Find the Moon: Ctrl-F, type “moon”, Enter
Move observer to the selected object (Moon): Ctrl-G
Find the Earth: Ctrl-F, type “earth”, Enter
Turn off horizon if the Earth is below the horizon: G
Zoom on to the selected object (Earth): /
If done correctly, Stellarium will show the spherical Earth in all its glory, as seen from the Moon.
Stellarium uses the spherical Earth model. If the result produced by Stellarium matches the actual observation, then there is nothing wrong with the spherical Earth model. We can use the app to tell us if it is just an error in the model or an actual discrepancy between observation and expectation. The latter will be much rarer.
Stellarium Using Flat Earth Claim
Some flat-Earthers claim that Stellarium is made using the flat Earth model. However, we can easily prove this wrong by using Stellarium to simulate how the Earth appears from the surface of the Moon:
Find the Moon: Ctrl-F, type “moon”, Enter
Move observer to the selected object (Moon): Ctrl-G
Find the Earth: Ctrl-F, type “earth”, Enter
Turn off horizon if the Earth is below the horizon: G
Zoom on to the selected object (Earth): /
If done correctly, Stellarium will show the spherical Earth in all its glory, as seen from the Moon.