Kepler said in his law sun would stand in one focus of the orbital shape. But, according to Conics there are two focus should exist, Therefore, what can be another focus?
It is physically impossible for a free macro body to revolve around another moving body in any type of geometrically closed path. This can be observed by watching a person trying to move around another person running along a defined path. Planets are free macro bodies, the central body (sun) is a moving body and a circular/elliptical path is a geometrically closed path. Planetary orbits are wavy paths about the central body's median path. However, assuming the central body is static in space, planetary orbit appears as a closed geometrical path. This imaginary figure may have one or two foci. These foci are imaginary points in our minds.
Nainan Varghese Can't we say when the sun is moving it changes the shape of space and gravity exists at a specific distance (creating a solenoidal gravitational field)? Like a ship in a river when the ship moves towards and water takes the position where the ship was and it creates an eclipse orbit shape and the thing towards the ship moves away with the shape. again it comes into the position taken by water.
Then the solenoidal gravitational field is another point that can't be seen and is just a point for the shape.
(If the ship is the sun then water is space and the thing towards the ship can be planets).
For anything to change its shape, it has to have constituents and a structure. What are the structure and constituents of space? Space is nothing but an imaginary container, presumed by rational beings, whenever they think of real objects.
See: http://vixra.org/pdf/1311.0018v1.pdf