Abstract
<title>Abstract</title> <p> How much does the Earth weigh, and what exactly is being weighed? This paper argues that the single catalogued figure for the mass of the Earth, 5.972 × 10 <sup>24</sup> kg, conceals physically distinct quantities that the classical account collapses into one number. The argument rests on a bipartite ontology of mass developed within the Info-Magneto-Electrostatic framework, in which interplanetary space is not empty but a real, viscous, compressible medium, the celestial plenum, whose operational density equals in SI magnitude, the permittivity of free space. Every body carries an inert nucleonic mass, the Mahatva, the seat of substance and inertia, and an interactive cohesive mass, the Gurutva, through which it couples to the surrounding flow. Gravity is reinterpreted not as an intrinsic pull of matter but as the inward pressure gradient of a plenum vortex, so that the surface acceleration follows from a kinematic invariant read from orbital data without Newton's constant. Particle mass is recovered as an integer count of space-filling rhombic dodecahedral cells, a construction that succeeds only when anchored simultaneously on the proton and the electron, which is taken as direct evidence that mass is intrinsically bipartite. Applied to the Earth, the framework returns an inert mass (Mahatva) of 4.765 × 10 <sup>24</sup> kg, about twenty percent below the catalogued value, an interactive mass (Gurutva) of 9.59 × 10 <sup>9</sup> kg, and a rotational inertia of 1.41 × 10 <sup>13</sup> kg traceable to solar magnetic forcing. Empirical and conceptual tensions are stated explicitly throughout. </p>