Anonymousabout 3 hours ago
The Dark Energy Spectroscopic Instrument has completed a five-year survey cataloging over 47 million galaxies and quasars — six times more than all previous spectroscopic surveys combined — creating the largest high-resolution 3D map of the universe. The $75 million instrument, operated from Arizona by a collaboration of 900+ researchers across 70 institutions, has produced early evidence that dark energy may be evolving over time rather than remaining constant, a finding that could reshape fundamental physics if confirmed by the full dataset analysis expected in 2027.