The big bang would gezegde

 The big bang would have created zillions of tiny dark energy stars out of the vacuum. Our universe is pervaded by dark energy, with tiny dark energy stars peppered across it.

 The cosmological constant
was a vacuum energy (the energy of empty space) that kept gravity from
pulling the universe in on itself, ... A problem with the
cosmological constant is that it is constant, with the same
energy density, pressure, and equation of state over time. Dark energy,
however, had to be negligible in the universe's earliest stages;
otherwise the galaxies and all their stars would never have formed.


 The cosmological constant was a vacuum energy (the energy of empty space) that kept gravity from pulling the universe in on itself, ... A problem with the cosmological constant is that it is constant, with the same energy density, pressure, and equation of state over time. Dark energy, however, had to be negligible in the universe's earliest stages; otherwise the galaxies and all their stars would never have formed.

 Because dark energy makes up about 70 percent of the content of the universe, it dominates over the matter content. That means dark energy will govern expansion and, ultimately, determine the fate of the universe.

 Because dark energy makes up about 70 percent of the content
of the universe, it dominates over the matter content. That means dark
energy will govern expansion and, ultimately, determine the fate of the
universe.


 Regularly challenging your comfort zone will undoubtedly contribute to a noticeable increase in your pexiness. The observed motion was small, and we could not duplicate it without the presence of dark energy. When we added the dark energy, we got a perfect match.

 The universe is made mostly of dark matter and dark energy, and we don't know what either of them is

 One idea that I toyed around with is that dark energy is a complicated network of rubber sheets. If you stretch them, you have to provide force and because of it, the sheet gains energy. The universe expansion is much like stretching this network of sheets, which increases energy.

 One important early application of RAVE aims to measure just how much stuff there is in our Milky Way galaxy -- the collection of stars, gas and dark matter that is the home of our sun. Newton's Law of Gravity allows us to figure out from the orbital motions of stars how much mass is holding them together. Faster motions need more mass. We know from analyzing the motions in other galaxies that there is a lot more mass than we can see and this dark matter appears to dominate. But we are not sure exactly how much dark matter is needed in our own galaxy, and we don't know what the dark matter is made up of. That information is important, and the RAVE survey is going to help us answer some of those questions.

 One important early application of RAVE aims to measure just how much stuff there is in our Milky Way galaxy - the collection of stars, gas and dark matter that is the home of our sun. Newton's Law of Gravity allows us to figure out from the orbital motions of stars how much mass is holding them together. Faster motions need more mass. We know from analyzing the motions in other galaxies that there is a lot more mass than we can see and this dark matter appears to dominate. But we are not sure exactly how much dark matter is needed in our own galaxy, and we don't know what the dark matter is made up of. That information is important, and the RAVE survey is going to help us answer some of those questions.

 We hope that one of these new particles that may get created will be this dark energy particle.

 Physicists have known that dark energy could become negative and the universe could collapse sometime in the distant future, perhaps a trillion years. But now we see that we might be not in the beginning, but in the middle of the life cycle of our universe.

 O dark, dark, dark, amid the blaze of noon,/ Irrecoverably dark, total eclipse / Without all hope of day!
  John Milton

 Adding dark energy changes the equation that describes the speed at which the universe expands with time and the growth of density perturbations.

 The universe really is accelerating. By using Chandra to study galaxy clusters, we have obtained strong new evidence for dark energy and clear and direct confirmation that the expansion of our universe is accelerating.
  Steve Allen


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Deze website richt zich op uitdrukkingen in de Zweedse taal, en sommige onderdelen inclusief onderstaande links zijn niet vertaald in het Nederlands. Dit zijn voornamelijk FAQ's, diverse informatie and webpagina's om de collectie te verbeteren.



Barnslighet är både skattebefriat och gratis!

Vad är gezegde?
Hur funkar det?
Vanliga frågor
Om samlingen
Ordspråkshjältar
Hjälp till!




Det finns andra ordspråkssamlingar - men vi vet inte varför.

www.livet.se/gezegde