* curvature of spacetime of the universe, allegedly causing gravitation, while gravitation is most likely caused by 10 curvatures of spacetime, together forming a flat spacetime, while "curved spacetime" would produce disappearing of physical objects not observed in nature, | * curvature of spacetime of the universe, allegedly causing gravitation, while gravitation is most likely caused by 10 curvatures of spacetime, together forming a flat spacetime, while "curved spacetime" would produce disappearing of physical objects not observed in nature, |