Massive Photon as Solution to Anomalous Acceleration of Deep-Space Probes and Unexpected Cosmological Correlation

All deep-space probes seem to experience small anomalous acceleration. It is assumed that these anomalies arise from the anisotropic thermal radiation associated with radioisotope thermoelectric generators, however, with all anomalous behaviour considered, this may not be the best explanation. Here, an alternative and exact solution is proposed, in remarkable agreement with measurements. In addition, the solution provides an alternative explanation for the Schwarzschild radius of the observable universe and could potentially explain different cosmological anomalies.