Astronomers Release 4 Billion-Object Universe Map After 13 Years
Updated
Updated · Livescience.com · Aug 11
Astronomers Release 4 Billion-Object Universe Map After 13 Years
3 articles · Updated · Livescience.com · Aug 11
Summary
Three ground-based surveys and 13 years of observations produced the largest 2D universe map, charting 4 billion stars, galaxies, black holes, asteroids and other objects across about three-quarters of the night sky.
The high-resolution map spans visible and near-infrared light, covering regions not obscured by dust or gas, and is being made publicly explorable through the free Legacy Survey Sky Browser.
NSF officials said researchers and citizen scientists can use the data to hunt for gravitational lenses and supernovae and to probe dark matter and dark energy.
Past versions of the Legacy Survey maps have already supported at least 1,800 science papers, and the new release is expected to guide work at the Vera C. Rubin Observatory and Nancy Grace Roman Space Telescope.
The dataset also underpins DESI's 3D mapping effort, whose first five-year survey ended in April and has hinted that dark energy may be weakening over time.
What universe-altering secrets about evolving dark energy are hiding inside this unprecedented 5.6-trillion-pixel cosmic map?
With the Roman Space Telescope launching in days, how will this massive public dataset permanently rewrite humanity's cosmic origins?
As AI scans these 4 billion celestial objects, could machines discover terrifying cosmic phenomena that human minds completely missed?
The 5.6 Trillion-Pixel Universe: Inside the 2026 DESI Legacy Imaging Surveys and the New Era of Cosmic Discovery
Overview
On August 10, 2026, astronomers released the largest-ever 2D color map of the universe, built from over 263,000 telescope exposures and processed using the Perlmutter supercomputer. This map catalogs nearly 4 billion celestial objects and serves as the foundation for the Dark Energy Spectroscopic Instrument (DESI), which then measured the distances to millions of galaxies and quasars, creating the most detailed 3D map of the cosmos. The DESI data revealed hints that dark energy may be changing over time, challenging the standard cosmological model and opening the door to new physics. The map also powers AI-driven discoveries and supports next-generation observatories like the Rubin and Roman telescopes.