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Sep 5, 2023 · The cosmos may never end. But if you were immortal, you’d probably wish it would. ... This dark energy is now thought to make up some 69 percent of the universe’s mass, while dark matter ...
May 3, 2024 · A consensus emerged around a theory called Λ cold dark matter (ΛCDM), in which cosmic history is largely the result of a struggle between the pull of dark matter and the push of dark energy ...
- Davide Castelvecchi
This is true whether the matter in the Universe is baryons or cold dark matter (or a combination of both). The Friedmann equation alone determines whether the Universe keeps expanding forever or eventually re-collapses; whether the scale factor S grows or shrinks is determined here only by the density of the Universe, which also determines its ...
Aug 28, 2006 · The dark matter problem can also be viewed as a question of the nature of clustering matter. Dark matter must be the basic building block of the largest structures in the universe: galaxies and ...
Oct 10, 2016 · The Big Rip. The first theory claims the Universe will end with a Big Rip, as the pull of the Universe's expansion gets stronger than the gravity it contains. This would tear apart galaxies ...
The theory suggests that from the "Big Bang" through the present day, matter and dark matter in the universe are thought to have been concentrated in stars, galaxies, and galaxy clusters, and are presumed to continue to do so well into the future. Therefore, the universe is not in thermodynamic equilibrium, and objects can do physical work.
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Aug 10, 2020 · But dark energy might mean that a different end awaits. The early years of the Universe’s evolution were determined by the amount of matter it held; over the past few billion years, dark energy ...
