The hypothesis of Eternity -FollowingPhysically, the empty space, the nothing, hastwo characteristics: the infinite extension (only nothing, or nothing that infact means, it is possible to exist everywhere), and continuity (nothing isequal in nature throughout all places in the universe). Thats right: the empty space is a continuum. Only then isit possible to understand and explain how the physics works. The oppositehypothesis, that space is discrete, discontinuous, granular, is discardedbecause it can not explain the existence of the concept of force field, nor theoperation of the principle of the theory of relativity: the perfect physicalequivalence between the concepts of rest and motion. These two well-defined characteristics, continuity andextent, from a condition that is very simple, empty space, make any two pointsin space vacuum, even if they are very far apart, become permanently united byluring themselves. It is the empty space by their physical equalityeverywhere, a way united by a continuous tension, of medium modulus welldefined. However, due to its characteristic continuous or present itself without divisions or separations physical absolute, which unitesnothing to nothing, the tension shows empty space a module or intensityrelatively variable around its medium value. This is the physical effect that allows the existenceof movements. The existence of nothing that coexists together withall our colossal Universe, comes the concept that we call empty space. Empty space,in infinite extension single perfect continuous union arises the concept that wecall tension.The union nothing to nothing (the union of theempty space), the tension of empty space has a force of magnitude relativelyvariable around its medium value, being able to present local oscillations. At these local variations in the tension of the emptyspace, we call movements, and some very specific types of movements, we call waves. All matter in the universe, and this can bedemonstrated mathematically using NewtonsSecond Law, for example, is nothing more than relative amounts of puremovement. In NewtonsSecond Law, the amount of matter is always exactly inversely proportional tothe acceleration, which is nothing more than just a well-defined type of motionor change of its position in relation to space. Every mass (amount of matter) always has a wave associatedthemselves, or can be perfectly seen or treated as such without any loss ofconceptual standpoint. For this complete identity between all concepts ofphysics, we can assume without fear of error that the theory of relativity ofEinstein is the perfect state that observers in different situations or statesof motion measurements obtained different amounts of physical concepts whichare founded all in the concept of motion. If all quantities depend on the physics concept ofmotion to exist, it was natural that observers in different situations obtain different measures of these quantities. A photon which is a light particle or a package,well-defined wave number (or movement) may occur spontaneously in empty space dueto its tension that arises from it along with their anti-particles, which isalso called photon, so that the two, if put together disappear again. Two high-energy photons to collide, can turn into aproton and anti-proton or a neutron and an anti-neuntron, or even into anelectron and an anti-electron or positron. When a proton binds to