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© 2026 Developments Today. All rights reserved.

A map of the quasars, galaxies, and stars that DESI mapped out over the course of its five year survey. Credit - DESI collaboration and KPNO/NOIRLab/NSF/AURA/R. Proctor

DESI Finishes Its Largest 3D Map Yet and Deepens Questions About Dark Energy

DESI completed its five-year main survey on April 14 after mapping 47 million galaxies and quasars.
The instrument outperformed its original target of more than 34 million galaxies.
Early DESI results hint dark energy may evolve over time rather than remain constant.

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DT Editorial Team·Apr 29, 2026·via universetoday.com

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Researchers are using DESI’s huge 3D map to study dark energy. Earth is at the center of this map, and every point is a galaxy. (Credit: DESI collaboration and KPNO/NOIRLab/NSF/AURA/R. Proctor)

DESI’s 47 Million-Galaxy Map Pushes Dark Energy Research Into a New Scale

DESI has produced the largest 3D map of the universe described in the source material.
The survey uses galaxy positions and distance measurements to trace dark matter-linked cosmic structure.
Researchers are using the data to probe dark energy, with observations set to continue through 2028.

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DT Editorial Team·Apr 28, 2026·via universetoday.com

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The rise, the fall and the rebound of cyclic cosmology

Cyclic Cosmology Is Back in the Conversation as New Data Reopens an Old Question

Cyclic cosmology proposes that the universe expands, collapses and begins again.
The idea had fallen out of favor but is gaining renewed attention.
New discussion is being driven in part by DESI’s large-scale mapping of the universe.

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DT Editorial Team·Apr 19, 2026·via newscientist.com

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A white point at the center of the screen leads to two lobes of blue above and below. The lobes also have concentric circles that form a hazy gradient.

DESI completes its giant 3D map of the cosmos and sharpens the dark energy debate

DESI has completed the largest 3D map of the universe yet assembled.
The map is meant to help researchers probe dark energy and cosmic expansion.
Its biggest impact may come through years of analysis built on the finished survey.

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DT Editorial Team·Apr 16, 2026·via space.com

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Largest ever map of universe captures 47 million galaxies and quasars

DESI completes the largest 3D map of the universe yet, with 47 million galaxies and quasars

DESI completed a five-year survey of more than 47 million galaxies and quasars.
The survey greatly expands the scale of previous cosmic maps.
Researchers hope the data will clarify signs that dark energy may be weakening.
The project expects another year of analysis before broader data release.

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DT Editorial Team·Apr 15, 2026·via newscientist.com

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