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  2. Perseus–Pisces Supercluster - Wikipedia

    en.wikipedia.org/wiki/Perseus–Pisces_Supercluster

    The Perseus–Pisces Supercluster is one of two dominant concentrations of galaxies (the other being the Local supercluster) in the nearby universe (within 300 million light years). This supercluster also borders a prominent void, the Taurus Void , and is part of the Perseus–Pegasus Filament which stretches for roughly a billion light years .

  3. Supercluster - Wikipedia

    en.wikipedia.org/wiki/Supercluster

    It consisted of two known rich clusters and one newly discovered cluster as a result of the study that discovered it. The then known clusters were Cl 1604+4304 (z=0.897) and Cl 1604+4321 (z=0.924), which then known to have 21 and 42 known galaxies respectively. The then newly discovered cluster was located at 16 h 04 m 25.7 s, +43° 14′ 44.7 ...

  4. Galaxy groups and clusters - Wikipedia

    en.wikipedia.org/wiki/Galaxy_groups_and_clusters

    MACS J0152.5-2852 is a massive galaxy cluster. Almost every pixel seen in the image is a galaxy, each containing billions of stars. [1]Galaxy groups and clusters are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation. [2]

  5. Supergalactic coordinate system - Wikipedia

    en.wikipedia.org/wiki/Supergalactic_coordinate...

    Galaxies and galaxy clusters < 50 M ly away from Earth plotted in the supergalactic plane. The supergalactic coordinate system is a reference frame for the supercluster of galaxies that contains the Milky Way galaxy, referenced to a local relatively flat collection of galaxy clusters used to define the supergalactic plane.

  6. Galaxy filament - Wikipedia

    en.wikipedia.org/wiki/Galaxy_filament

    This was the first super-large large-scale structure or pseudo-structure in the universe to be discovered. The CfA Homunculus lies at the heart of the Great Wall, and the Coma Supercluster forms most of the homunculus structure. The Coma Cluster lies at the core. [22] [23] Sloan Great Wall (SDSS Great Wall) 2003 z=0.07804 433 Mpc long

  7. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [ 4 ] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users.

  8. Perseus–Pegasus Filament - Wikipedia

    en.wikipedia.org/wiki/Perseus–Pegasus_Filament

    The Perseus–Pegasus Filament is a galaxy filament containing the Perseus–Pisces Supercluster and stretching for roughly a billion light-years (or over 300/h Mpc). Currently, it is considered to be one of the largest known structures in the universe. [note 1] This filament is adjacent to the Pisces–Cetus Supercluster Complex.

  9. Perseus Cluster - Wikipedia

    en.wikipedia.org/wiki/Perseus_Cluster

    The Perseus cluster (Abell 426) is a cluster of galaxies in the constellation Perseus. It has a recession speed of 5,366 km/ s and a diameter of 863 ′ . [ 1 ] It is one of the most massive objects in the known universe , containing thousands of galaxies immersed in a vast cloud of multimillion-degree gas.