Conversavation of Energy
Transfer of Energy
Astronomy and cosmology
- Gravitational collapse of matter, usually molecular hydrogen, into various classes of astronomical objects (stars, black holes, etc.)
- or from nuclear fusion of lighter elements, in this case, primarily hydrogen.
Dark energy is believed to make up 70% of the universe. Light elements, primarily hydrogen and helium, were created in the Big Bang. These light elements were spread too fast and too thinly in the Big Bang process through nucleosynthesis to form the most stable medium-sized atomic nuclei, like iron and nickel. This fact allows for later energy release, as such intermediate-sized elements are formed in our era. The formation of such atoms powers the steady energy-releasing reactions in stars, and also contributes to sudden energy releases, such as in novae.
Gravitational collapse of matter into black holes is also thought to power the very most energetic processes, generally seen at the centers of galaxies. Some believe black holes lead to an alternate web of universes as mass entering the black holes accelerates beyond the boundaries of Relativistic Physics. This is a moment where the universe contracts to an infinitesimal point, relatively speaking and then expands equally and oppositely in a completely different dimension of space and time.
Cosmologists are still unable to explain all cosmological phenomena purely on the basis of known conventional forms of energy, for example those related to the accelerating expansion of the universe. Dark Energy is necessary to describe certain cosmological observations, particularly regarding black holes, where light travels faster than the speed of light.
Energy comes from the Greek ενέργεια, where εν- means "in" and έργον "work". The compound εν-εργεια in Epic Greek meant "divine action" or "magical operation"; it was later used by Aristotle with the meaning of "activity, operation" or "vigour", and by Diodorus Siculus for "force of an engine."