AbstractWe report evidence for a universal constitutive amplification factor governing how spacetime converts baryonic loading into observed gravitational response across more than twenty orders of magnitude in scale. Starting from a purely geometric definition based on observed-to-effective deformation area ratios, we identify three invariant response plateaus: unity in the Solar System, ∼ 5 in disk galaxies, and 6.67 at black hole horizons. These values emerge directly from geometric constraints and are independently confirmed by observational data from the SPARC galaxy database, weak-lensing cluster measurements, andEvent Horizon Telescope imaging of Sagittarius A* and M87*. The results suggest that gravitational anomalies commonly attributed to dark matter reflect intrinsic nonlinear response properties of the spacetime medium itself, without modifyingEinstein field equations. 本文报道了关于普适本构放大因子的证据,该因子统御着时空如何在超过二十个数量级的尺度跨度上,将重子负荷转化为观测到的引力响应。 从基于“观测面积与有效变形面积比”的纯几何定义出发,我们识别出了三个不变的响应平台: 太阳系中的 1(单位值); 盘状星系中的约 5; 黑洞视界处的 6.67。 这些数值直接源自几何约束,并得到了来自 SPARC 星系数据库、弱引力透镜星系团测量,以及 EHT(事件视界望远镜) 对人马座 A*(Sagittarius A*)和 M87* 成像观测数据的独立证实。 研究结果表明,通常归因于暗物质的引力异常,实际上反映了时空介质自身的内在非线性响应属性,而无需修改爱因斯坦场方程。