The Lack of Stars in the Pictures of Space

In many pictures taken from space, stars are not visible, even with a dark sky. The reason is that stars are very dim compared to the primary object in the pictures. If the camera is set to take a correctly exposed image of an object that is much brighter than the stars, then the stars would not be visible in the picture. The same thing would happen everywhere, in space, or on the surface of the Earth.

Flat-Earthers often take the lack of stars as fakery. They are wrong. This is simply a limitation of any camera.

Continue reading “The Lack of Stars in the Pictures of Space”

Sun Glare Makes the Sun Appear Larger

The Sun has the angular size of approximately 0.53° seen from Earth, and it is practically constant throughout a single day. But sunlight is very intense and result in a glare that surrounds the Sun. Because of the intensity, we are unable to distinguish the Sun from its glare.

During a sunset, the intensity of sunlight is lower due to the fact that sunlight has to traverse Earth’s atmosphere at an angle. Because of the reduced intensity, the amount of glare will also be reduced, and the Sun can look as if it is shrinking.

Flat-Earthers often use this phenomenon as ‘evidence’ of a receding Sun during a sunset. They are wrong.

Continue reading “Sun Glare Makes the Sun Appear Larger”

Zooming in Will Not Reveal More of a Distant Object

Zooming in using a camera merely magnifies the center portion of the image. Changing zoom does not change an object’s position with respect to another object or the camera. It will not reveal more of a distant object.

Flat-Earthers often claim that zooming in will reveal distant objects that are ‘allegedly’ behind the curvature. They are wrong. If the object is really behind the curvature, then no amount of zooming can bring the object back into view.

Continue reading “Zooming in Will Not Reveal More of a Distant Object”

Perspective Compression: Determining If a Curvature Exists

Soundly’s pictures and videos of Lake Pontchartrain power lines and causeway stirred up the flat-Earthers’ nests. They clearly show the curvature of the Earth, where it is usually hard to discern. For the rest of us, those pictures are just the consequence of the fact that the Earth is a globe.

Flat-Earthers can’t take this, and they invented various excuses to attack the credibility of these pictures and videos. Some of them look for specific vantage point where it is impossible or very hard to discern the curvature.  They would conclude if the curve is not seen from these vantage points, then it should not be visible from Soundly’s viewpoints.

Continue reading “Perspective Compression: Determining If a Curvature Exists”

Curvature of the Horizon in High-Altitude Balloon Footage

High-altitude balloon footage is often abused by flat-Earthers to show us that the Earth is flat when seen from a high altitude.

We analyzed more than two dozens of footage taken from high-altitude balloons on YouTube, and we can easily conclude the curvature is there and usually easy to spot, including in the cases where flat-Earthers use the video as ‘proof’ of a flat Earth.

Continue reading “Curvature of the Horizon in High-Altitude Balloon Footage”

Earthshine Proves the Moon Obscures the Sun During a Total Solar Eclipse

During a total solar eclipse, the Moon is right between the Earth and the Sun. Thus, the near side of the Moon does not receive any sunlight. But while it is dark, it still gets some light reflected by the surface of the Earth. This phenomenon is called Earthshine.

Some flat-Earthers argue that a solar eclipse is not caused by the blocking of the Sun by the Moon, but by another, mysterious celestial body. The reason is that eclipses are incompatible with their beliefs about the motion of the Sun and the Moon.

Earthshine proves that they are wrong.

Continue reading “Earthshine Proves the Moon Obscures the Sun During a Total Solar Eclipse”

The Starburst Effect is not Evidence of CGI

In photography, the starburst effect gives the illusion of light rays from strong light sources in an image. The effect happens when the lens’ aperture is not a perfect circle, and it gets more pronounced under a narrower aperture.

Flat-Earthers often find themselves looking for any peculiarity —no matter how small or unbelievable— to discredit any picture they deem unacceptable to their misguided causes. One of this peculiarity is the starburst effect.

Continue reading “The Starburst Effect is not Evidence of CGI”

The Oblate Spheroid Shape and Pictures of the Earth From Space

The Earth is not perfectly spherical. Its diameter is longer across the equator than between the poles; it is oblate spheroid. This fact is often questioned by flat-Earthers. According to them, every picture of the Earth from space shows the Earth as a perfect sphere, and never as an oblate spheroid. Then they would present it as ‘evidence’ that scientists have been lying to us.

But it is actually possible to determine that the Earth is in fact oblate spheroid from pictures of the Earth taken from space.

Continue reading “The Oblate Spheroid Shape and Pictures of the Earth From Space”

Difference in Entrance Pupil Diameter: The Real Reason Why An Obscured Object Appears When Zoomed In

Ever seen a video where a flat-Earther tries to demonstrate that a distant object that appears to be behind an obstacle can be brought back into view simply by zooming in? He would then conclude the same thing would happen when zooming in to a distant ship, and the reason a distant ship is not visible is not the curvature of the Earth.

Well, no. The real reason why the object in that experiment can be seen after zooming in is that the obstacle is close, and there’s difference in the camera’s entrance pupil size when the zoom changes. For a camera that has very long zoom range —like the Nikon P900—, the difference can be very dramatic.

Continue reading “Difference in Entrance Pupil Diameter: The Real Reason Why An Obscured Object Appears When Zoomed In”

Lake Pontchartrain Power Transmission Lines: Evidence of Earth’s Curvature

Lake Pontchartrain is a lake in Louisiana, United States. There are power transmission lines about 24.27 km (15 mi) across this lake. They are practically straight, and each tower is uniform and has the same height, making these towers ideal for observing the curvature of the Earth.

They were first popularized by Soundly who presented evidence of Earth’s curvature using a series of photos and videos of the power lines in June 2017. As of now, the towers and other objects on the lake are probably the most popular Earth curvature tourism spot in the world.

Continue reading “Lake Pontchartrain Power Transmission Lines: Evidence of Earth’s Curvature”

Brightness of a Total Lunar Eclipse

“Looking at the pictures of the progression of a lunar eclipse, the Moon turns red, but there’s no apparent change of brightness of the Moon as it progresses from full moon to total eclipse. Therefore, a total lunar eclipse cannot be the result of the Earth casting its shadow on the surface of the Moon.”

Some flat-Earthers —presumably never seen a total lunar eclipse in person before— actually claim that.

Continue reading “Brightness of a Total Lunar Eclipse”

Star Trail: Evidence the Earth is a Sphere and Rotating Around Its Axis

In the northern hemisphere, if we look at the sky to the north, we can observe stars rotate counter-clockwise around a point. This axis of rotation is not visible from observers in the southern hemisphere.

On the other hand, in the southern hemisphere, if we look at the sky to the south, we can observe stars rotate in the opposite direction. Conversely, this axis of rotation is not visible from observers in the northern hemisphere.

This motion of the stars cannot possibly happen in a flat-Earth. The motion of the stars is a proof that the Earth is round and rotates around its axis.

Continue reading “Star Trail: Evidence the Earth is a Sphere and Rotating Around Its Axis”

Why Don’t We See Satellites in Photos Taken From The ISS?

“Why don’t we see satellites in photos taken from the ISS?” (or from space in general). That’s a recurring question within the flat-Earth community, usually asked without expecting an answer, assuming that an answer is impossible, and that it is a glaring oversight when the powers that be purposefully made the picture using CGI.

But no, the pictures are real. And satellites are not visible because they are too far spaced apart from each other.

Continue reading “Why Don’t We See Satellites in Photos Taken From The ISS?”

The Little Piggy Balloon Footage Proves Earth is a Sphere, not Flat

Little Piggy is the nickname of a helium balloon launched by IndianaCaver. It reached the altitude of almost 37 km before it finally ruptured and fell to the Earth. Before that, it took several hours of video, and IndianaCaver made these video available on YouTube.

Then, some flat-Earthers cherry-picked bits of the video where the horizon looked flat and presented it as ‘proof’ of flat-Earth. These are widely circulated in various memes and forms, even years after the originals were published.

But, can we use these videos as ‘proof’ of flat-Earth?

Continue reading “The Little Piggy Balloon Footage Proves Earth is a Sphere, not Flat”

Nikon Coolpix P900 and The Supposedly ‘Real’ Pictures of Venus

The Nikon Coolpix P900 camera is a very popular camera among flat-Earthers because there’s no other compact camera ever made that has such enormous zoom range. It is a unique and a very useful tool in this state of affair.

Someday, some flat-Earthers decided to bring their trusty P900s out and used them to take some pictures of Venus. To their delight, the resulting pictures don’t look like Venus we all used to know. They were too excited that they thought they have discovered an original ‘proof’ of global deception. “This is an irrefutable ‘proof’ that they have been lying to us!” so they say.

But, maybe there’s a simpler, more plausible explanation…

Continue reading “Nikon Coolpix P900 and The Supposedly ‘Real’ Pictures of Venus”

The Philosophy of CGI

When a photo of spherical Earth is pointed out to flat-earthers, they will dismiss it as CGI in the blink of an eye; even if they haven’t done any analysis at all. They do this because their belief in flat-Earth is not evidence-based, and any evidence contrary to their beliefs needs to be invalidated no matter how.

They are so used to doing it, and sometimes they become confused by it themselves, to the point that they would take the slightest hint of digital manipulation of any picture of the Earth as evidence of the flat Earth.

Continue reading “The Philosophy of CGI”

Fisheye Lenses and Earth Curvature

A good majority of pictures of Earth taken from space are being dismissed by flat-earthers merely because they are made using fish-eye lenses. They believe any curvature of Earth shown in those pictures is the result of the fisheye effect, and thus, cannot be used as evidence of Earth’s curvature. They even take a step further and assume a fish-eye lens is deliberately used to take every picture of the Earth taken from a high altitude so that they would have a curvature in it.

These claims are, of course, ungrounded. In some cases, we can conclude the curvature is there, even when a fish-eye lens is being used. We can use this useful property of any photographic lens:

A straight line will appear straight as long as it crosses the center point of the image.

Continue reading “Fisheye Lenses and Earth Curvature”