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blackskynet
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Dark Flow: Tugs from Beyond the Observable Universe?
Is this true ? If true then what lies Beyond the Observable Universe ?
Is this true ? If true then what lies Beyond the Observable Universe ?
Beyond the more detailed critique of Ned Wright here, I'll take a somewhat higher-level view.mathman said:Text is excerpt from:
http://en.wikipedia.org/wiki/Dark_flow
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Astrophysicist Ned Wright posted an online response to the study arguing that its methods are flawed.[6] The authors of the "dark flow" study released a statement in return, refuting three of Wright's five arguments and identifying the remaining two as a typo and a technicality that do not affect the measurements and their interpretation.[7]
A more recent statistical work done by Ryan Keisler[8] claims to rule out the possibility that the dark flow is a physical phenomenon because Kashlinsky et al. do not consider primary CMB anisotropies as important as they are.
NASA's Goddard Space Center considered that this could be the effect of a sibling universe or a region of space-time fundamentally different from the observable universe. Data on more than 1,000 galaxy clusters have been measured, including some as distant as 3 billion light-years. Alexander Kashlinsky claims these measurements show the universe's steady flow is clearly not a statistical fluke. Kashlinsky said: "At this point we don't have enough information to see what it is, or to constrain it. We can only say with certainty that somewhere very far away the world is very different than what we see locally. Whether it's 'another universe' or a different fabric of space-time we don't know."[9]
The existence and the velocity of dark flow will probably stay disputed until the new accurate cosmic microwave background radiation data by the European Space Agency's Planck satellite are available in 2012.[10]
"Tugs from Beyond the Observable Universe" is a theoretical phenomenon that suggests the existence of unseen forces in the universe that are causing the observed acceleration of the expansion of the universe.
The "Tugs from Beyond the Observable Universe" theory proposes that these unseen forces are coming from outside of the observable universe, while dark energy is thought to be a form of energy that is present within the observable universe.
Currently, there is no direct evidence for the existence of "Tugs from Beyond the Observable Universe." However, this theory is a possible explanation for the observed acceleration of the universe's expansion, which is supported by various astronomical observations.
The "Tugs from Beyond the Observable Universe" theory is still a relatively new and unproven concept, and it is not yet widely accepted by the scientific community. However, it is being studied and explored as a potential explanation for the mysteries of the universe.
If this theory were to be proven true, it would greatly expand our understanding of the universe and could potentially lead to new discoveries and advancements in cosmology and physics.