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  2. Higher-dimensional Einstein gravity - Wikipedia

    en.wikipedia.org/wiki/Higher-dimensional...

    In 2014, Hari Kunduri and James Lucietti proved the existence of a black hole with Lens space topology of the L(2, 1) type in five dimensions, [2] this was next extended to all L(p, 1) with positive integers p by Shinya Tomizawa and Masato Nozawa in 2016 [3] and finally in a preprint to all L(p, q) and any dimension by Marcus Khuri and Jordan ...

  3. List of largest cosmic structures - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_cosmic...

    The structures are listed based on their longest dimension. This list refers only to coupling of matter with defined limits, and not the coupling of matter in general (such as, for example, the cosmic microwave background, which fills the entire universe). All structures in this list are defined as to whether their presiding limits have been ...

  4. Fractal cosmology - Wikipedia

    en.wikipedia.org/wiki/Fractal_cosmology

    Pietronero argues that the universe shows a definite fractal aspect over a fairly wide range of scale, with a fractal dimension of about 2. [3] The fractal dimension of a homogeneous 3D object would be 3, and 2 for a homogeneous surface, whilst the fractal dimension for a fractal surface is between 2 and 3.

  5. Holographic principle - Wikipedia

    en.wikipedia.org/wiki/Holographic_principle

    However, there exist classical solutions to the Einstein equations that allow values of the entropy larger than those allowed by an area law (radius squared), hence in principle larger than those of a black hole. These are the so-called "Wheeler's bags of gold". The existence of such solutions conflicts with the holographic interpretation, and ...

  6. Galaxy filament - Wikipedia

    en.wikipedia.org/wiki/Galaxy_filament

    In cosmology, galaxy filaments are the largest known structures in the universe, consisting of walls of galactic superclusters.These massive, thread-like formations can commonly reach 50 to 80 megaparsecs (160 to 260 megalight-years)—with the largest found to date being the Hercules-Corona Borealis Great Wall at around 3 gigaparsecs (9.8 Gly) in length—and form the boundaries between voids ...

  7. General relativity - Wikipedia

    en.wikipedia.org/wiki/General_relativity

    This is done in "3+1" formulations, where spacetime is split into three space dimensions and one time dimension. The best-known example is the ADM formalism . [ 174 ] These decompositions show that the spacetime evolution equations of general relativity are well-behaved: solutions always exist , and are uniquely defined, once suitable initial ...

  8. 100th Woman in Space Reveals the Sentimental Item She ... - AOL

    www.aol.com/lifestyle/100th-woman-space-reveals...

    After years of anticipation, on Nov. 22, the mother of two from West Virginia not only achieved that dream but also made history as the 100th woman to travel to space with Blue Origin.

  9. Boötes Void - Wikipedia

    en.wikipedia.org/wiki/Boötes_Void

    A map of the Boötes Void. The Boötes Void (/ b oʊ ˈ oʊ t iː z / boh-OH-teez) (colloquially referred to as the Great Nothing) [1] is an approximately spherical region of space found in the vicinity of the constellation Boötes, containing only 60 galaxies instead of the 2,000 that should be expected from an area this large, hence its name.