  The four dimensional spacetime continuum, as first conceived by Minkowski,
has become the default framework within which to describe physical laws. In
this paper, we show how a four-dimensional Minkowski spacetime structure
naturally arises from three-dimensional physical space when modeled with
Clifford geometric algebra $ C\ell(\Re^3) $. This expanded eight-dimensional
framework allows a generalisation of the invariant interval and the Lorentz
transformations. Also, with this geometric oriented approach the fixed speed of
light, the laws of special relativity and the form of Maxwell's equations,
arise naturally from the intrinsic properties of the algebra without recourse
to physical arguments. We also find new insights into the nature of time, a
unified treatment of energy-momentum and spin, a Lagrangian unifying gravity
and electromagnetism as well as predictions of a new class of physical effects
and interactions.
