Vol. 6, Issue 2, Part A (2024)

Total Milky-Way (MW) Mass (MG) is a longstanding question, without clear & precise resolution. An array of estimates exist, many of which seem to partially agree, partially disagree or totally disagree with each other. To address the question of MW Mass, we test numerous estimates for compliance with the Power Spectrum Hubble Constant (H0), & the Cosmic Microwave Background Radiation (CMBR) Temperature (T0). It is shown that intermediate MW Mass estimates (e.g. 1.54 • 10^12 M_S) breach Particle Data Group (PDG) requirements for the satisfaction of H0 & T0 constraints, whilst solutions less than 7 • 1011 M are substantially more compliant. Hence, the Ideal Solution for Virial Mass (MG = MVir) & Virial Radius (rVir) precisely satisfying H0 & T0, are 6.3768 • 1011 M & 182.6 (kpc) respectively. Moreover, the Ideal MVir result was found to be quasi-identical to the 2008 value of 6.3142 • 1011 M derived by Storti, demonstrating that the Solar Distance to Galactic Centre (R0) requires Astro Physical Community (APC) standardisation. In addition, we propose that M82 denotes a potential candidate Galaxy which may be utilised to invalidate the existence of the ‘Hubble Tension’. Furthermore, we also demonstrate that the existence of the ‘Hubble Tension’ can be invalidated via the experimental observation of a sufficiently large population of Galaxies.