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The first set of results from a pioneering cosmic-mapping project hints that the repulsive force known as dark energy has changed over 11 billion years, which would alter ideas about how the Universe has evolved and what its future will be. The first set of results from a pioneering cosmic-mapping project hints that the repulsive force known as dark energy has changed over 11 billion years, which would alter ideas about how the Universe has evolved and what its future will be.

The Dark Energy Survey (DES) collaboration has achieved one of the most robust measurements of the constraints on the Universe's expansion to date.

For decades, measurements of the universe's expansion have suggested a disparity, which threatens to break cosmology as we know it. The James Webb Space Telescope is looking at it.

For decades, measurements of the universe's expansion have suggested a disparity known as the Hubble tension, which threatens to break cosmology as we know it. Now, on the eve of its second anniversary, a new finding by the James Webb Space Telescope has only entrenched the mystery.

The Euclid mission will probe dark energy and dark matter like never before, setting the stage for an international, multiobservatory push to solve some of the universe’s deepest mysteries