The expansion of the universe is the increase in distance between gravitationally unbound parts of the observable universe with time. [1] It is an intrinsic expansion, so it does not mean that the …

Dec 13, 2024 · Astronomers have long understood that the universe is expanding —in other words, the space in between cosmic objects that aren’t bound by gravity is getting ever more …

Nov 23, 2025 · Expansion operates on scales where speed-of-light limitations cease applying, permitting universe to expand faster than light at cosmic distances. This apparent paradox …

4 days ago · The early universe probe, which uses cosmological models to indirectly provide the current expansion rate of the universe, favors an expansion rate of ~67 km/s/Mpc; and the late …

1 day ago · New analysis of quasar time delays points to a faster-expanding universe, making the gap with early-universe predictions harder to dismiss.

Sep 12, 2023 · The rate at which the universe is expanding, known as the Hubble constant, is one of the fundamental parameters for understanding the evolution and ultimate fate of the cosmos.

Nov 11, 2025 · Every photon we observe from the distant past, every faint echo of the cosmic microwave background, every galaxy drifting away, testifies to a simple yet profound truth: the …

Jan 19, 2025 · New research confirms the Universe is expanding faster than theoretical models predict, intensifying the Hubble tension. Using precise measurements of the Coma cluster, …

5 days ago · We've long known that we move through the Universe relative to the cosmic microwave background, but a new study of radio galaxies finds an even faster result, which …

Jan 20, 2025 · Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New findings risk turning the tension into a …