Jovian Planets Have Center of Spacetime Structur

In 2009, the new idea that Jovian planets have a center of spacetime had brought forward Jovian planets have more density of spacetime (spacetime/massenergy) than Terrestrial planet'; and Terrestrial planets have more density of massenergy (massenergy/spacetime) than Jovian planets' A fluid has more density of spacetime (spacetime/massenergy) than solidity's; a solidity has more density of massenergy (massenergy/spacetime) than the one of the fluid. Spacetime has a spacetime structure and a center of the spacetime structure; massenergy has a massenergy structure and a center of the massenergy structure. The dark matter and dark energy also have a center of the spacetime structure. \textbf{Mass, Energy, Space And Time System Theory---MEST A way to help our earth} http://meetings.aps.org/link/BAPS.2009.APR.E1.33