~wip; basically explaining the fundamental force in relation to humanity's expansion~
Light (known with its respective particles as photons) is an electromagnetic radiation that currently is the fastest thing in the Universe, with a vacuum traveling speed at 299,792,458 metres per second. C, the variable used for light, is an integral part to many equations in physics and astronomy. There are many forms of light, although the most commonly known is named visible light.
(insert relevance to space engine)