articleThe Astrophysical JournalFeb 27, 2026GOLD OA

The SPHEREx Satellite Mission

JJJames J. BockAMAsad M. AboobakerJAJoseph AdamoRARachel AkesonJMJohn M. Alred

California Institute of Technology · Jet Propulsion Laboratory · +22 more institutions

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Abstract

Abstract Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx), a NASA Explorer satellite launched on 2025 March 11, is carrying out the first all-sky near-infrared spectral survey. The satellite observes in 102 spectral bands from 0.75 to 5.0 μ m with a resolving power ranging from λ /Δ λ = 35–130 in 6 . ″ 2 pixels. The observatory obtains a 5 σ depth of 19.5–19.9 AB mag for 0.75 < λ < 3.8 μ m with λ /Δ λ ∼ 40 and 17.8–18.8 AB mag for 3.8 < λ < 5.0 μ m with λ /Δ λ ∼ 120 after mapping the full sky four times over two years. Scientifically, SPHEREx will produce a large galaxy redshift survey over the full sky to constrain the amplitude of…

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Authors

114
  • JJ
    James J. BockCorresponding

    California Institute of Technology, Jet Propulsion Laboratory

  • AM
    Asad M. Aboobaker

    Jet Propulsion Laboratory

  • JA
    Joseph Adamo

    University of Arizona

  • RA
    Rachel Akeson

    California Institute of Technology

  • JM
    John M. Alred

    Jet Propulsion Laboratory

Topics & keywords

Topics
Keywords
  • Satellite
  • Sky
  • Galaxy
  • Observatory
  • Redshift
  • Solar System
  • COSMIC cancer database
  • Conjunction (astronomy)
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