I'll search for current scientific literature on the size of the universe to provide you with a comprehensive answer based on the latest research.
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Let me search for more recent and specific information about the size of the observable universe.
observable universe diameter 93 billion light years Planck measurements 2020
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Let me read some of the most relevant articles to get detailed information about current measurements.
The recent Planck Legacy 2018 release has confirmed the presence of an enhanced lensing amplitude in CMB power spectra compared to that predicted in the standard $\Lambda$CDM model. A closed universe can provide a physical explanation for this effect, with the Planck CMB spectra now preferring a pos...
2019 · DOI: 10.1038/s41550-019-0906-9
Let me try to read another relevant article about cosmological measurements.
The current cosmological probes have provided a fantastic confirmation of the standard Λ Cold Dark Matter cosmological model, which has been constrained with unprecedented accuracy. However, with the increase of the experimental sensitivity, a few statistically significant tensions between different...
2021 · DOI: 10.1016/j.astropartphys.2021.102605
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Let me search for more recent review articles or comprehensive studies about the size of the universe.
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Let me read the article about mysteries on the universe's largest observable scales as it seems directly relevant.
We review recent findings that the universe on its largest scales shows hints of the violation of statistical isotropy, in particular alignment with the geometry and direction of motion of the solar system, and missing power at scales greater than 60 degrees. We present the evidence, attempts to exp...
2006 · DOI: 10.1016/j.newar.2006.09.013
Let me search for more specific information about the actual size measurements and recent cosmological parameters.
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Let me read the article about the apparent gravitational horizon in cosmology from 2018.
In general relativity, a gravitational horizon (more commonly known as the "apparent horizon") is an imaginary surface beyond which all null geodesics recede from the observer. The Universe has an apparent (gravitational) horizon, but unlike its counterpart in the Schwarzschild and Kerr metrics, it ...
2018 · DOI: 10.1119/1.5045333
Let me search for more specific information about the actual numerical size of the observable universe based on recent cosmological measurements.
"observable universe" 93 billion light years Planck 2018 2020 measurements
Let me read the article about Planck evidence for a closed universe from 2019.
The recent Planck Legacy 2018 release has confirmed the presence of an enhanced lensing amplitude in CMB power spectra compared to that predicted in the standard $\Lambda$CDM model. A closed universe can provide a physical explanation for this effect, with the Planck CMB spectra now preferring a pos...
2019 · DOI: 10.1038/s41550-019-0906-9
Let me search for articles that specifically discuss the numerical size of the observable universe.
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Based on my search results and the available literature, I can provide you with a comprehensive answer about the current size of the universe. Let me also search for one more specific article about cosmological horizons.
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Now let me read the article about distance measures in cosmology from 2020.
The aim of this paper is to analyze the concept of cosmological distance with a simple didactic approach that is not easy to find in textbooks. In this way, we hope to help facilitate student learning about this issue.
2020 · DOI: 10.1139/cjp-2019-0257
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