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Dianna Leilani Cowern (born May 4, 1989) is an American science communicator.She is a YouTuber; she uploads videos to her YouTube channel Physics Girl explaining various physical phenomena.
Under this scenario, dark energy would ultimately tear apart all gravitationally bound structures, including galaxies and solar systems, and eventually overcome the electrical and nuclear forces to tear apart atoms themselves, ending the universe in a "Big Rip". On the other hand, dark energy might dissipate with time or even become attractive.
The following is a list of YouTubers for whom Wikipedia has articles either under their own name or their YouTube channel name. This list excludes people who, despite having a YouTube presence, are primarily known for their work elsewhere.
AEW Dark, or simply Dark, is an American professional wrestling streaming television program that was produced by the American promotion All Elite Wrestling (AEW), running from October 8, 2019, to April 25, 2023, on AEW's YouTube channel.
The measured dark energy density is Ω Λ ≈ 0.690; the observed ordinary (baryonic) matter energy density is Ω b ≈ 0.0482 and the energy density of radiation is negligible. This leaves a missing Ω dm ≈ 0.258 which nonetheless behaves like matter (see technical definition section above) – dark matter.
AEW Dark: Elevation, also known as Dark: Elevation or simply Elevation, is an American professional wrestling streaming television program that was produced by the American promotion All Elite Wrestling (AEW), running from March 15, 2021, to April 24, 2023, on AEW's YouTube channel.
Since the 1990s, studies have shown that, assuming the cosmological principle, around 68% of the mass–energy density of the universe can be attributed to dark energy. [6] [7] [8] The cosmological constant Λ is the simplest possible explanation for dark energy, and is used in the standard model of cosmology known as the ΛCDM model.
Studies with quintessence dark energy found that it dominates gravitational collapse in a spacetime simulation, based on the holographic thermalization. These results show that the smaller the state parameter of quintessence is, the harder it is for the plasma to thermalize.