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Dark-energy mapper will reconstruct 11 billion years of cosmic history

A telescope in Arizona will conduct the largest spectroscopic survey of galaxies.
  1. Davide Castelvecchi
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Astronomers are about to embark on their most ambitious galaxy-mapping project ever. Over the next five years, they will use a telescope in Arizona — retrofitted with thousands of small robotic arms — to capture light spectra from 35 million galaxies and reconstruct the Universe’s history of expansion. Their main aim: to elucidate the nature of dark energy, the enigmatic force that is pushing the Universe to accelerate at an ever-faster pace.

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Nature 572, 295-296 (2019)

doi: https://doi.org/10.1038/d41586-019-02424-8

Updates & Corrections

  • Correction 12 August 2019: An earlier version of this story misstated Daniel Eisenstein's affiliation. This has been corrected.

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