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Ordinary (baryonic) matter (4.9%) Dark matter (26.8%) Dark energy (68.3%) [6] The observable universe is a ball-shaped region of the universe consisting of all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time; the electromagnetic radiation from these objects has had time to reach ...
The Scale of the Universe. The Scale of the Universe is an interactive online visualization tool and website first created in 2010 by Cary and Michael Huang, two brothers from Moraga, California. [1][2][3][4][5] Released on both Newgrounds and the Huang brothers' personal web page (htwins.net), it features a scrollbar that players can use to ...
e. In physical cosmology, the shape of the universe refers to both its local and global geometry. Local geometry is defined primarily by its curvature, while the global geometry is characterised by its topology (which itself is constrained by curvature). General relativity explains how spatial curvature (local geometry) is constrained by gravity.
January 31, 2023 at 1:08 PM. Study finds that stars and planets grow together (Owen Humphreys/PA) (PA Archive) Scientists have made a precise map of all the matter in the universe. The new map ...
The universe is all of space and time [ a ] and their contents. [ 10 ] It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments.
Map of Anaximander's universe. Anaximander, around 560 BCE, was the first to conceive a mechanical model of the world. In his model, the Earth floats very still in the centre of the infinite, not supported by anything. [18] Its curious shape is that of a cylinder [19] with a height one-third of its diameter. The flat top forms the inhabited ...
In modern physical cosmology, the cosmological principle is the notion that the spatial distribution of matter in the universe is uniformly isotropic and homogeneous when viewed on a large enough scale, since the forces are expected to act equally throughout the universe on a large scale, and should, therefore, produce no observable inequalities in the large-scale structuring over the course ...
The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. [1] The notion of an expanding universe was first scientifically originated by physicist Alexander Friedmann in 1922 with the mathematical derivation of the Friedmann equations. [2][3][4][5]