This massive 3D map of 47 million galaxies could unlock dark energy

A massive cosmic milestone has just been reached: scientists have completed the largest high-resolution 3D map of the universe ever created. Built using data from over 47 million galaxies and quasars, this map could unlock new clues about dark energy—the mysterious force driving the universe’s expansion. Despite setbacks like wildfire disruptions, the international DESI collaboration powered through, gathering an unprecedented dataset that already hints dark energy may behave in unexpected ways.