Dark Energy
Dark energy is a hypothetical form of energy that is believed to make up approximately 68% of the total mass-energy content of the universe. It is thought to be responsible for the observed acceleration of the expansion of the universe. Dark energy is distinct from dark matter, which makes up about 27% of the universe's mass-energy content. The nature of dark energy is not well understood, and it is one of the greatest mysteries in modern physics.
External Links
- [stopchevelonbuttewind.com] STOP Chevelon Butte Wind farm - it's really dark energy not green