DESI completes first survey and processes five-year cosmic dataset
Updated
Updated · Gizmodo · Apr 26
DESI completes first survey and processes five-year cosmic dataset
9 articles · Updated · Gizmodo · Apr 26
DESI has mapped over 47 million galaxies and 20 million stars across 11 billion years, with data processing expected to take two to four months.
Scientists anticipate hundreds of new studies from this dataset, which could clarify whether dark energy evolves or remains constant, challenging or confirming the standard cosmological model.
Upcoming results from DESI and the Euclid mission may resolve key questions about the universe’s expansion, while DESI continues supplementary surveys and plans collaborative projects with other observatories.
As multiple mega-telescopes race for answers, who will finally solve the mystery of dark energy?
With rival surveys offering conflicting data, is our understanding of dark energy completely wrong?
With evidence for evolving dark energy still shaky, are we witnessing a discovery or a false alarm?
Einstein's cosmological constant is in doubt again. Are we on the verge of a new physics revolution?
If dark energy is evolving, could our universe be heading for a dramatic collapse instead of a cold death?
DESI Completes Unprecedented 47 Million-Object 3D Cosmic Map, Revealing Potential Evolution of Dark Energy
Overview
In early 2026, the Dark Energy Spectroscopic Instrument (DESI) completed its five-year survey, producing the largest and most detailed 3D map of the universe with over 47 million galaxies and quasars. This breakthrough revealed early evidence that dark energy, the force driving cosmic expansion, may be weakening over time, challenging the long-standing Lambda CDM model and suggesting dynamic alternatives like quintessence. Despite major challenges from the COVID-19 pandemic and a wildfire, DESI's advanced robotic technology and global collaboration enabled this success. Now, with an extended mission underway and a comprehensive data release planned for 2027, DESI is poised to confirm these findings and deepen our understanding of dark energy and dark matter.