Physics
Few figures in the history of technology are more controversial than Wernher von Braun, the card-carrying Nazi scientist who built, by the exploitation of thousands of slave laborers from concentration camps, the world’s first ballistic missile. Working for NASA he became a leader in the American space program, building the rocket that carried Apollo 11 up to the moon. Read more
There are still great truths to say, if we had both the courage to state them and the good disposition to accept them. Freeman Dyson
We could say that the annual parallax of a star is the angle defined by the sun, the star and the Earth. (considering the star perpendicular to the line that unites the Sun and the Earth).
Astronomical aberration is a phenomenon that makes a star, seen in a telescope, appear in a place slightly different from the expected. Aberration has been observed in 1727 by the English astronomer James Bradley who, in the course of his surveys, noticed that stars seemed to be subject to a slight movement within a period of one sidereal year. He thought that this movement depended on the position of the star inside the celestial sphere. Read more
When considering earth as stationary and flat, the sun must be moving on a conic trajectory . (Maybe you can remember my article “Our Earth Pond and the Tent of the Sun”). In the same way the moon, in its movement in the space/ time, has to follow a trajectory moving in the shape of a cone. And this will be the basic theme of the following consideration.
