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SPHEREx

NASA’s Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) is an all-sky spectral survey mission that maps galaxies and stars in near-infrared light to study cosmic origins and the ingredients for life.

SPHEREx
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Identity

Aliases
Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices ExplorerSPHEREx Mission
Name
SPHEREx
Status
active

Details

Astronauts
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Description
NASA’s Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) is an all-sky spectral survey mission that maps galaxies and stars in near-infrared light to study cosmic origins and the ingredients for life.
Destination
Polar, Sun-synchronous low Earth orbit at approximately 650 km altitude along the day-night terminator, with an approximately 98-minute period, for all-sky near-infrared spectral mapping of galaxies and stars
Launch Site
Outcome
SPHEREx completed the first of its four planned all-sky infrared maps by late 2025. Its 102-wavelength survey has also mapped molecular clouds, including water ice and aromatic organic material in the Cygnus X star-forming region. A study published in April 2026 found that the densest ice coincides with dense dust, supporting the role of dust grains and shielding in the formation and survival of interstellar ice.
Programs
Start Date
2025-03-12
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Creation Time
August 13, 2026 at 16:34:01 UTC
Updated Time
October 29, 2026 at 13:20:18 UTC

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