Definition of dark energy in English:

dark energy


mass nounPhysics
  • A theoretical form of energy postulated to act in opposition to gravity and to occupy the entire universe, accounting for most of the energy in it and causing its expansion to accelerate.

    ‘Einstein's theories allow for the possible existence of dark energy’
    • ‘Because dark energy can turn gravity into a repulsive force, it could account for this acceleration.’
    • ‘The ever-growing amount of dark energy progressively accelerates the universal expansion.’
    • ‘Dark energy is a form of energy that does not dilute as the universe expands.’
    • ‘Astronomers do believe that some kind of dark energy is slowly speeding up the Universe's expansion.’
    • ‘Yet dark energy is a nebulous concept, one that has thus far flummoxed some of the smartest researchers on the planet.’
    • ‘The evidence for gravitationally repulsive dark energy is strong, but there are gaps in our knowledge.’
    • ‘It is too soon yet to know whether the existence of dark energy will be confirmed with future experiments.’
    • ‘Researchers ascribe this strange state of affairs to dark energy, an entity that's the flip side of gravity.’
    • ‘Today scientists are developing multiple strategies for measuring dark energy in new and different ways.’
    • ‘Whatever dark energy turns out to be, we already know how to measure it and how to calculate its effects on the cosmos.’
    • ‘Nobody knows how to calculate dark energy which is causing the Universe to accelerate.’
    • ‘According to the model, the Big Bang is followed by a period of slow expansion and gradual accumulation of dark energy.’
    • ‘The equation-of-state parameter governs the rate at which the dark energy density evolves.’
    • ‘Well, what you can see are the gravitational effects, both of dark matter and of the dark energy.’
    • ‘The chief sign of the existence of dark energy is that the universe's expansion is accelerating.’
    • ‘Steve Petranek and I talked about dark matter, dark energy and gravity.’
    • ‘An issue that arose during the discussion was whether dark energy worked against gravity.’
    • ‘It is also possible to modify GR directly in four dimensions to help do away with the need for dark energy.’
    • ‘The energy density of dark energy, which depends on w, affects the expansion rate.’
    • ‘The need for the dark energy has been invoked by a need to explain the acceleration of distant galaxies.’