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Finally, it is speculated that since the Sun is so large and the rays are essentially parallel to the Earth-Moon system at their location from the Sun, that the illuminated portion of the Moon is not necessarily point at the center of the Sun.
 
Finally, it is speculated that since the Sun is so large and the rays are essentially parallel to the Earth-Moon system at their location from the Sun, that the illuminated portion of the Moon is not necessarily point at the center of the Sun.
  
Consider a situation where we have only have two bodies: The Moon and a Sun. The Sun starts as the size of the Moon (or smaller). The illuminated portion of the Moon will point at the center of that Sun. If the Sun continuously recedes in distance from the Moon and grows geometrically in a linear fashion, will the Moon ever ''not'' point at the center of the Sun?
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Consider a situation where we have only have two bodies: The Moon and a Sun. The Sun starts as the size of the Moon (or smaller). The illuminated portion of the Moon will point at the center of that Sun. If the Sun continuously recedes in distance from the Moon and grows in size geometrically in a linear fashion, will the Moon ever ''not'' point at the center of the Sun?
  
 
[[File:Growing Sun.png|600px]]
 
[[File:Growing Sun.png|600px]]
  
 
Hence we see that, with only two bodies, the Moon will always point at the Sun's center, regardless of distance or size. There is no real reason for it to point anywhere else. The addition of an Earth somewhere around the Moon should not matter.
 
Hence we see that, with only two bodies, the Moon will always point at the Sun's center, regardless of distance or size. There is no real reason for it to point anywhere else. The addition of an Earth somewhere around the Moon should not matter.

Revision as of 22:37, 27 June 2020

The Moon Tilt Illusion Supplement page addresses supplementary arguments related to the Moon Tilt Illusion.

Higher Sun Argument

According to the Round Earth Thoery's Perspective Explanation the illuminated portion of the Moon is tilted upwards by perspective. If this is true then it should not be possible to view the Sun and Moon misaligned at the same time, in the same field. However, it has been reported that both the Moon and Sun have been seen simultaneously, misaligned to each other.

As a response to this it is claimed that since the sun's light is parallel and hitting the Earth-Moon system as a whole from the side, the Moon will see a higher Sun than the Earth. The Sun will appear from a different position in space to the Moon, causing the Moon's illuminated area to point to a position above the Sun that we see from Earth.

Higher Sun.png

In contrast to this argument, the angles are not perfectly parallel under the Round Earth system. When assessing the parallax displacement between an observer on Earth and an observer on the Moon the Sun will be in essentially the same point in space.

Angular Diameter Example

As an example, if your eye is at an altitude of 5 feet, 6 inches, and there is an object, say a Green Ball on a post 15 feet away from you at the same altitude, and an Orange Ball on a post 30 feet away from you, which are both also at altitudes of 5 feet, 6 inches, then the position of both the green and orange balls will be parallel on the horizontal. The path to those objects will be at your eye level.

Instead, lets say that you step on a boulder that is 5 foot, 6 inches in height. The new altitude of your eye is 11 feet in height. We know that the green and orange balls are on posts which are 5 ft 6 in below that 11 foot elevation where it would need to be to be parallel to the eye.

In order to find the position of the green and orange balls in degrees below eye level, we can use an angular diameter calculator to calculate the missing space above the green and orange ball, to determine how far below eye level those balls will be to the observer.

For the Green Ball, 5.5 feet at 15 feet produces an angular diameter of 20.778 degrees. For the Orange Ball, 5.5 feet at 30 feet produces an angular diameter of 10.475 degrees.

Diagram

Orange ball.png

We see that as a body moves further from you, it gets closes to your eye level, and displaces fewer degrees in space between two altitudes.

Adopting the above to the Earth and Moon in the RE system, we had from the previous diagram an observer seeing the Sun parallel on the horizontal at eye level, midway setting into the horizon. The Moon was directly over the observer. In order to calculate the displacement of the Sun in the sky between to an observer the Moon we may use the angular diameter calculator with the distances involved in miles.

Input
g: 238900
r: 93000000

Output
a: 0.147 degrees

Hence, if the observer was able to move from the Earth to the Moon the Sun would be seen from essentially the same position in space. The diagram of the Sun appearing in two different places is misleading, as it does not show the entire scene and the angles are not exactly parallel to the Sun.

Triangle Calculator

Next, we look at a triangle calculator, which will compute the missing values in a triangle:

Triangle Calc.png

We put in the distances in miles to the RE Moon at Side b, the distance to the RE Sun at Side c, and 90 degrees at the observer at Angle A. This produces the following:

https://www.calculator.net/triangle-calculator.html?vc=&vx=238900&vy=&va=90&vz=93000000&vb=&angleunits=d&x=70&y=8

Triangle Calc Result.png

We see a very thin Right Scalene Triangle. We see that the angle displacement at Angle B is 0.147 degrees, as previously seen in the angular diameter calculator. We also see that Moon at Angle C is pointing downwards at 89.853 degrees; not exactly parallel to the baseline.

Conclusion

Now, consider the following from the above Right Scalene Triangle diagram generated by the Triangle Calculator:

If the object at Angle C was a Green Arrow pointing at the center of the Sun (Angle B), and if we could see both the Green Arrow and Sun at once in the fame field of vision (essentially the whole scene), would the the Green Arrow point at the Sun?

This should be true regardless of the shape of the triangle, and demonstrates the expectation that the illuminated portion of the Moon should point at the center of the Sun when viewed simultaneously. The Green Arrow should not point at a different spot in space.

Sun-parallel.png
(Not to scale)

The Sun is not actually shining on the Earth and Moon at the same angle, but at slightly different angles; and when viewing the entire scene the illuminated portion of the Moon will point at the Sun.

Alignment with Sun Center

Finally, it is speculated that since the Sun is so large and the rays are essentially parallel to the Earth-Moon system at their location from the Sun, that the illuminated portion of the Moon is not necessarily point at the center of the Sun.

Consider a situation where we have only have two bodies: The Moon and a Sun. The Sun starts as the size of the Moon (or smaller). The illuminated portion of the Moon will point at the center of that Sun. If the Sun continuously recedes in distance from the Moon and grows in size geometrically in a linear fashion, will the Moon ever not point at the center of the Sun?

Growing Sun.png

Hence we see that, with only two bodies, the Moon will always point at the Sun's center, regardless of distance or size. There is no real reason for it to point anywhere else. The addition of an Earth somewhere around the Moon should not matter.