'The dream has come true': Standard model of cosmology holds up in massive 6-year study of the universe - with one big caveat
Yahoo • • science
Key Points:
- A six-year Dark Energy Survey (DES) analyzing 669 million galaxies has provided new insights into dark energy, the force driving the universe's accelerating expansion, by combining four types of data from the Victor M. Blanco Telescope in Chile.
- The survey's findings show that two leading cosmological models—one with constant dark energy density and another with varying density—fit the cosmic expansion data equally well, but both struggle to fully explain the observed clustering of matter in the universe.
- The DES results tighten constraints on cosmic expansion models about twice as much as previous studies, confirming earlier findings while highlighting unresolved questions about galaxy clustering patterns.
- Researchers plan to continue refining dark energy models using upcoming data from the Vera C. Rubin Observatory to deepen understanding of this
