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  2. De Sitter universe - Wikipedia

    en.wikipedia.org/wiki/De_Sitter_universe

    A de Sitter universe is a cosmological solution to the Einstein field equations of general relativity, named after Willem de Sitter.It models the universe as spatially flat and neglects ordinary matter, so the dynamics of the universe are dominated by the cosmological constant, thought to correspond to dark energy in our universe or the inflaton field in the early universe.

  3. Einstein–de Sitter universe - Wikipedia

    en.wikipedia.org/wiki/Einstein–de_sitter_universe

    The Einstein–de Sitter universe is a model of the universe proposed by Albert Einstein and Willem de Sitter in 1932. [1] On first learning of Edwin Hubble's discovery of a linear relation between the redshift of the galaxies and their distance, [2] Einstein set the cosmological constant to zero in the Friedmann equations, resulting in a model of the expanding universe known as the Friedmann ...

  4. Flatness problem - Wikipedia

    en.wikipedia.org/wiki/Flatness_problem

    The local geometry of the universe is determined by whether the relative density Ω is less than, equal to or greater than 1. From top to bottom: a spherical universe with greater than critical density (Ω>1, k>0); a hyperbolic, underdense universe (Ω<1, k<0); and a flat universe with exactly the critical density (Ω=1, k=0). The spacetime of ...

  5. Einstein's static universe - Wikipedia

    en.wikipedia.org/wiki/Einstein's_static_universe

    Einstein's static universe, aka the Einstein universe or the Einstein static eternal universe, is a relativistic model of the universe proposed by Albert Einstein in 1917. [ 1 ] [ 2 ] Shortly after completing the general theory of relativity , Einstein applied his new theory of gravity to the universe as a whole.

  6. Shape of the universe - Wikipedia

    en.wikipedia.org/wiki/Shape_of_the_universe

    Spaces that have an edge are difficult to treat, both conceptually and mathematically. Namely, it is difficult to state what would happen at the edge of such a universe. For this reason, spaces that have an edge are typically excluded from consideration. However, there exist many finite spaces, such as the 3-sphere and 3-torus, that have no edges.

  7. Building A Machine for Pigs and expanding the universe ... - AOL

    www.aol.com/news/2012-02-22-building-a-machine...

    It takes place sixty years after Amnesia: The Dark Descent at the turn of the twentieth century, yet the next game to carry the franchise's moniker will feel like familiar territory in one major ...

  8. Theory of everything - Wikipedia

    en.wikipedia.org/wiki/Theory_of_everything

    These principles have worked so well on simple examples that we can be reasonably confident they will work for more complex examples. For example, although general relativity includes equations that do not have exact solutions, it is widely accepted as a valid theory because all of its equations with exact solutions have been experimentally ...

  9. Winter pot roast recipe is big game dish with 'tender' taste

    www.aol.com/winter-pot-roast-recipe-big...

    Note: If using beef instead of venison, choose a chuck roast or trimmed brisket. The only difference will be a shorter cook time, 2 to 3 hours. 1 1⁄2 cups whole milk