NishMath

Recent data from the Dark Energy Spectroscopic Instrument (DESI) suggests that dark energy, the mysterious force driving the accelerating expansion of the universe, may be weakening over time. This challenges the standard model of cosmology, which assumes dark energy has a constant density and pressure. Researchers, including Seshadri Nadathur from the DESI collaboration, have analyzed significantly more data than in previous studies, strengthening the conclusion that the engine driving cosmic expansion might be sputtering.

The findings are also supported by evidence from the Dark Energy Survey (DES), which also observed a vast expanse of the cosmos and reported indications of varying dark energy. Miguel Zumalacárregui notes that Euclid's capabilities could better determine the universe's expansion rate through gravitational-wave observations. If confirmed, this would rewrite our understanding of the universe's fate, potentially leading to alternative scenarios beyond the current model of endless expansion and eventual cosmic emptiness.


References :

• Quanta Magazine: Is Dark Energy Getting Weaker? New Evidence Strengthens the Case.
• www.newscientist.com: Dark energy isn't what we thought
• www.scientificamerican.com: Frozen Cosmic Sound Bubbles Suggest Dark Energy Is Shockingly Changeable
• Alex Knapp: The Prototype: Dark Energy May Be Evolving
• www.lemonde.fr: Expansion de l’Univers : un coup de frein inattendu qui bouleverse les théories sur l’énergie noire

Classification:

• HashTags: #DarkEnergy #Cosmology #Astrophysics
• Company: QuantaMagazine
• Target: Universe
• Product: Cosmology
• Feature: CosmicExpansion
• Type: Research
• Severity: Informative