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    cosmological principle tagged posts

    Superhorizon Modes Can Explain Hubble Tension

    February 1, 2022, Categories  Astronomy/Space

    The sketch depicts a perturbation of very large wavelength, larger than the size of the maximum distance light could have travelled since the origin of the Universe. The volume inside is the visible universe. (Image by Prabhakar Tiwari) 

    A research team led by Dr. Prabhakar Tiwari from the National Astronomical Observatories of Chinese Academy of Sciences (NAOC) has found that superhorizon modes could explain the observed Hubble tension.

    Their findings were published in The Astrophysical Journal Letters on Jan. 18.

    It is generally believed that the universe is isotropic and homogeneous on large distance scales. This hypothesis forms the basis of the standard Big Bang cosmology, called the cosmological principle (CP)...

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