**Authors:** John A. Gowan

The intrinsic motions of light, time, and gravity are primordial forms ("drives") of entropy, causing: 1) the creation, expansion, and cooling of space; 2) the creation, expansion, and aging of history; 3) the conversion of either entropic domain into the other, respectively. The charges of matter are the symmetry debts of light (Noether's Theorem), including the conserved "location" charge of gravity, which encodes (in negative terms) the lost positive/spatial entropy drive of the free energy (light) which was converted to the bound energy of matter. Gravity is matter's memory it once was light. Gravity pays the entropy-"interest" on matter's symmetry debt by creating time from space - giving charge conservation an extended, causal significance in the time dimension. Light's spatial entropy drive and expansion funds matter's historical entropy drive and expansion, via the gravitational conversion of space to time; cosmic spatial expansion decelerates in consequence. Gravity pays the energy-"principal" of matter's symmetry debt by the conversion of bound to free energy - via the nucleosynthetic pathway in stars and supernovas, via the conversion of gravitational potential energy to radiation in quasars, and via Hawking's "quantum radiance" of black holes. The cosmic gravitational energy field is reduced as mass is converted to light; cosmic spatial expansion accelerates in consequence."Dark Energy" is therefore simply the ongoing reduction of the cosmic gravitational field as matter reverts to the light which created it. In the mathematical terms of Evariste Galois' "Group Theory", the "Tetrahedron Model" is a description of the symmetry group of light, including its destruction by asymmetric weak force decays (producing our matter-only Cosmos), and its on-going restoration in obedience to Noether's Theorem of symmetry conservation (as in the conversion of bound to free energy in stars and other astrophysical processes).

**Comments:** 14 Pages. paper is in two parts due to length; revised abstract

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[v1] 3 Nov 2009

[v2] 15 Sep 2010

[v3] 2012-02-15 14:40:59

[v4] 2012-10-02 17:06:15

[v5] 2014-07-01 08:35:15

[v6] 2016-04-25 15:39:56

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