What is Large-scale structure of the Universe?
[[File:Structure of the Universe.jpg|250px|thumb|The Universe consists of vast galaxy filaments and voids spanning incredibly large distances.(Billions of light years)]] '''Large Scale structure of the Universe''' refers to the patterns of galaxies and matter on scales much larger than individual [[galaxies]] and [[Galaxy group|groupings of galaxies]]. These correlated structures can be seen up to billion of light years in length and are created and shaped by gravity.<ref>{{Cite web|title=Large-Scale Structure|url=https://www.darkenergysurvey.org/supporting-science/large-scale-structure/|access-date=2020-11-02|website=The Dark Energy Survey|language=en-US}}</ref> On large scales, the Universe displays coherent structure with galaxies residing in groups and clusters on scale(s) of ~1-3 megaparsecs (Mpc), which lie at the intersections of long [https://en.m.wikipedia.org/wiki/Galaxy_filament Galaxy filaments] that are usually >10 Mpc in length. Vast regions of relatively empty space, known as [https://en.m.wikipedia.org/wiki/Void_(astronomy) voids], contain very few galaxies and span in the volume in between these structures.<ref>{{Cite book|last=Coil|first=Alison L.|title=Planets, Stars and Stellar Systems |date=2013|chapter=The Large-Scale Structure of the Universe |pages=387–421|doi=10.1007/978-94-007-5609-0_8|arxiv=1202.6633|bibcode=2013pss6.book..387C|isbn=978-94-007-5608-3|s2cid=56104933}}</ref> It is amplified to enormous proportion by [[gravitational force]]s, producing ever-growing concentrations of [[dark matter]] in which ordinary gases cool, condense and fragment to create galaxies. The Large Scale Structure incorporates the notion of all the content in the universe which includes [[Galaxies]] — most of them bound in [https://en.m.wikipedia.org/wiki/Supercluster Galaxy clusters and Superclusters], [[Dark matter]] and [[Dark energy]]. While precise figures are impossible to acquire, it is currently thought that Dark Energy makes up 68% of the universe, Dark Matter follows with 27%, [[Radiation]] ([[Ne