The expansion of the universe was discovered by separate theoretical and observational work in the 1920s. Since then, the expansion has become a core aspect of the astrophysical field of cosmology. …

6 days ago · Scientists have been gifted with a clearer picture of the expansion of the universe and dark energy, the mysterious force driving the acceleration of this expansion, than ever before. This comes ...

Nov 10, 2025 · Scientists have long held that the universe is expanding at an ever-increasing rate, driven by a mysterious but measurable force known as dark energy.

5 days ago · The James Webb Space Telescope, working alongside Hubble, has uncovered an unsettling contradiction about how fast the universe is expanding. These new findings — which …

Oct 14, 2025 · Unlike a balloon expanding into surrounding air or bread rising in an oven, the universe doesn’t expand into anything—space itself stretches, carrying galaxies along while creating more …

expanding universe, dynamic state of the extragalactic realm, the discovery of which transformed 20th-century cosmology.

6 days ago · Scientists release the most detailed analysis yet on the expansion of the universe Scientists at the Dark Energy Survey have published their most detailed explanation yet of how the …