Cosmic microwave background

Most every cosmologist believes the universe is flat. A new analysis argues that it’s closed.

(Phys.org) —The universe may have existed forever, according to a new model that applies quantum correction terms to complement Einstein's theory of general relativity. The model may also account for dark matter and dark energy, resolving multiple problems at once.

Description

Learn about the cosmic microwave background radiation (CMB or CMBR), including what it is and why it is important in cosmology.

In trying to understand the universe, two major problems remained: the flatness problem and the horizon problem . To solve these, the big bang theory is modifie

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From Earth to the cosmic microwave background -- a logarithmic representation of the entire visible universe. Beautiful work by @budassiuniverse https://www.visualcapitalist.com/cp/map-of-the-entire-known-universe/ .

Introduction Three main arguments are commonly used to support the Big Bang model of the universe’s origin: The apparent expansion of the universe, inferred from redshifted spectra of distant galaxies; The fact that the Big Bang can account for the observed relative abundances of hydrogen and helium; The observed cosmic microwave background (CMB) radiation, thought to be an “afterglow” from a time about 400,000 years after the supposed Big Bang. Although an

New map of the universe’s cosmic growth supports Einstein’s theory of gravity: « In this new image, we can see directly the invisible cosmic web of dark matter that surrounds and connects galaxies. » #darkmatter #CMB #universe (Source: https://www.princeton.edu/news/2023/04/11/new-map-universes-cosmic-growth-supports-einsteins-theory-gravity)