Is Earth's solar eclipse unique in the solar system?

Some choices for the origin of the reference coordinate system for calculations of interplanetary trajectories are better than others. The best choices, usually, are heliocentric (center of the sun) and solar system barycentric (the solar system's center of mass). Likewise, some choices for the XY plane (and its normal vectors) are better than others, with the best choices being the "invariant" plane, which is the plane perpendicular to the solar system's angular momentum vector, and the plane of Earth's orbit.

Zero is here at this time, pick whatever you want and go from there. There is no absolute zero location.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.