2007/01/11 by E. D. Greaves, Greaves, E. D.
Earth and Planetary Sciences · Physics and Astronomy · #FOS: Physical sciences #General Physics (physics.gen-ph) #Geophysics and Gravity Measurements #History and Developments in Astronomy #Relativity and Gravitational Theory #Space Physics (physics.space-ph) #physics.gen-ph #physics.space-ph
paper · pdf · doi:10.48550/arxiv.physics/0701130
5 pages, 2 figures, 1 table; Submitted to Astrophysical Journal
arxiv created 2007/01/11 · openalex publication_date 2007/01/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
For over 20 years NASA has struggled to find an explanation to the Pioneer anomaly. Now it becomes clear the solution to the riddle is that they have uncovered evidence that c, the speed of light, is not quite a universal constant. Using J. C. Cure s hypothesis that the index of refraction is a function of the gravitational energy density of space and straightforward Newtonian mechanics, NASA s measurements provide compelling evidence that the speed of light depends on the inverse of the square root of the gravitational energy density of space. The magnitude of the Pioneer anomalous acceleration leads to the value of the primordial energy density of space due to faraway stars and galaxies: 1.0838. x 1015 Joule/m3. A value which almost miraculously coincides with the same quantity: 1.09429 x 1015 Joule/m3 derived by J. C. Cure from a completely different phenomenon: the bending of starlight during solar eclipses.