The Largest 3D Map of the Universe Is Shaking Cosmology to Its Foundations

Key Points:

• The DESI Collaboration won the 2026 Gizmodo Science Fair for producing the largest high-resolution 3D map of the universe, covering over 47 million galaxies and quasars across 11 billion years of cosmic history, significantly advancing knowledge about the universe’s expansion and dark energy.
• DESI’s data challenge the widely accepted cosmological constant model (Λ) that explains the universe’s accelerating expansion, revealing discrepancies that suggest our understanding of dark energy may be incomplete or incorrect.
• Installed on the Mayall 4-meter telescope, DESI uses 5,000 robotic optical fibers to precisely map galaxies, enabling unprecedented data collection that surpasses all previous surveys combined and has already produced surprising results within its first three years.
• The DESI survey will continue operating until 2028, followed by a second run until about 2035, with ongoing data analysis and staggered public releases to facilitate broad scientific investigation of dark energy and cosmic evolution.
• The collaboration includes over 1,000 researchers worldwide and is managed by the U.S. Department of Energy’s Lawrence Berkeley National Laboratory, highlighting a global effort to unravel fundamental questions about the universe’s origins, growth, and fate.