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New 3D Cosmic Map Raises Questions Over Future of Universe, Scientists Say
The biggest ever 3D map of the universe, featuring more than 6m galaxies, has been revealed by scientists who said it raised questions about the nature of dark energy and the future of the universe. From a report: The map is based on data collected by the Dark Energy Spectroscopic Instrument (Desi) ...
Researchers said that by using this map, they have been able measure how fast the universe has been expanding at different times in the past with unprecedented accuracy. However, the findings have also raised the tantalising possibility that dark energy -- a mysterious, repulsive force that drives the process -- is not constant throughout time as has previously been suggested. The research, which has been published in a series of preprints â" meaning it has yet to be peer-reviewed â" reveals how the team first created the 3D map, then measured patterns in the distribution of galaxies that relate to sound waves that occurred in the early universe, known as baryon acoustic oscillations.
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