In this video the JK experts remove the engine bolts from a Volkswagen in preparation to for removal of the engine.
Dark matter. Written By: Dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. Dark matter makes up 26.5 percent of the matter-energy composition of the universe; the rest is dark energy (73 percent) and âordinaryâ visible matter (0.5 percent).
Dark matter is the term astronomers use to describe material in the universe that does not emit or reflect light and is, therefore, invisible.Stars, nebulae, and galaxies are examples of luminous objects in the sky.ark matter is the term astronomers use to describe material in the universe that does not emit or reflect light and is, therefore, invisible.