Feature

Sky rivers

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Science  05 Oct 2018:
Vol. 362, Issue 6410, pp. 16-21
DOI: 10.1126/science.362.6410.16

Figures

  • Streams of stars surround the galaxy NGC 5907, relics of a shredded dwarf galaxy. Dozens of streams have recently been found around the Milky Way.

    PHOTO: R. JAY GABANY/COSMOTOGRAPHY
  • CREDITS: (GRAPHIC) C. BICKEL/SCIENCE; (DATA) ADRIAN PRICE-WHELAN AND CARL GRILLMAIR
  • Deep sky surveys have driven a surge in stream discoveries. The Sloan Digital Sky Survey uses a 2.5-meter telescope (bottom left) at Apache Point Observatory in New Mexico. The Dark Energy Survey relies on the 4-meter Blanco telescope in Chile (top). And the 8.4-meter Large Synoptic Survey Telescope is set to open in Chile in 2022 (bottom right).

    PHOTOS (CLOCKWISE FROM TOP): BABAK TAFRESHI/NATIONAL GEOGRAPHIC CREATIVE; GIANLUCA LOMBARDI/CCA 4.0; REIDAR HAHN/FERMILAB/SCIENCE SOURCE

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