Galaxies and clusters

Definition

Galaxies and clusters are the ensembles of stars and other astronomical objects bound together by gravitational forces. Galaxies are ordered into galaxy groups, which are in turn organised into clusters. The Earth is in a galaxy called the Milky Way, which is in the Local Group in the Virgo Supercluster.

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Latest Research and Reviews

  • Research |

    Recent observations reveal tension between various cosmological probes. Assuming dark energy to be non-constant, depending on redshift, may relieve this tension. The Dark Energy Spectroscopic Instrument survey will be able to confirm this result.

    • Gong-Bo Zhao
    • , Marco Raveri
    • , Levon Pogosian
    • , Yuting Wang
    • , Robert G. Crittenden
    • , Will J. Handley
    • , Will J. Percival
    • , Florian Beutler
    • , Jonathan Brinkmann
    • , Chia-Hsun Chuang
    • , Antonio J. Cuesta
    • , Daniel J. Eisenstein
    • , Francisco-Shu Kitaura
    • , Kazuya Koyama
    • , Benjamin L’Huillier
    • , Robert C. Nichol
    • , Matthew M. Pieri
    • , Sergio Rodriguez-Torres
    • , Ashley J. Ross
    • , Graziano Rossi
    • , Ariel G. Sánchez
    • , Arman Shafieloo
    • , Jeremy L. Tinker
    • , Rita Tojeiro
    • , Jose A. Vazquez
    •  & Hanyu Zhang
    Nature Astronomy 1, 627–632

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