The length of a degree is in a ratio to the radius of a circle. (The centre of the circle is the eye! The viewing device). Whatever length of unit is used to define one, equally dictates the other. Earths radius of 3963 miles produces a degree length of 24887.64 ÷ 360 = 69.13 miles. […]Read More A formula for finding the length of a degree.
Axial rotation describes a point on the edge of a plane that moves at right angles to its centre in a way that will cause it to first approach, then recede from any given direction. In other words, if you place a marker on a wheel standing on the ground, that marker will first travel […]Read More “The moon rotates on its axis” Oh, no it doesn’t!
Data used for calculating moons distance from earth: Earths dimensions: Wikipedia Moons rise/set times – Time and Date Moons location above earth: Sub Solar/Lunar Point The diagram above shows the minimum distance for an object to be seen by half the planet simultaneously. Any farther, then like the sun, half the planet […]Read More The moons distance revisited
The second diagram below shows the minimum distance for an object to be seen by half the planet simultaneously. Any farther, then, like the sun, half the planet would see the object and its distance could not be calculated using rise/set observations. But the moon cannot be observed simultaneously over 180˚. For example, when it […]Read More The moon’s distance – calculations explained
All astronomical measurement is only possible using predictable cycles of motion. A ‘Day’ is one turn of the Earth on its axis. A ‘Year’ is one cycle of the Earth round the Sun. There is also the moon’s cycle of 27.32 days, and Precession of the Equinoxes, which I will discuss later. Our measure of […]Read More The God Equation
Our moon is still as mysterious and magical as when our ancestors accorded it god-like powers. Second, only to the sun in its influence on Mother Earth, it causes the oceans to move, affects the growth of all life and most definitely stirs the imagination. Yet we still know very little about it. Obviously, I […]Read More Distance to the Moon