also, our atmosphere acts like a projection screen, on which projected light from space falls onto and is then observed as a flat 2D shape in the sky, a disc, a circle, as we do not observe any form in space directly, the light travelled here, same as a normal projector that projects an "image" through space. but that would mean their mathematical equations are total nonsense, and people love their math.... this atmosphere is located at a medium change, from space, nothing, to earth, atmosphere, bending the light so that perfect circular orbits, appear elliptical to us here, as we observe a circle, under projected perspective, same as when you play a video game, and you observe a totally different perspective on your screens.... but nah, elliptical is what we see, so elliptical is what must be, but Kepler himself never understood when writing down his "laws". think about it.