All the tools for measuring it in the local, recent Universe give fairly consistent results, around 72 to 74 kilometers per ...

A difference of a few kilometers per second might not sound like much. In cosmology, it has become one of the field’s most ...

A new synthesis of astronomical measurements confirms a persistent mismatch that could point to physics beyond current models ...

The most precise measurement yet shows the Universe is expanding faster than expected, deepening the Hubble tension. The ...

The local universe may be expanding more slowly than previously thought, scientists have found. The discovery, made in two separate pieces of research, could relieve one of the most troubling ...

The universe is expanding, and after decades of work, astronomers still cannot agree on how fast. That disagreement, known as ...

Ultra-faint dwarf galaxies orbiting the Milky Way are cosmic fossils. New simulations reveal how these tiny systems reflect ...

Using a new framework, astronomers arrived at the most precise measurement of our universe’s expansion rate—but things still ...

A major international effort has produced an ultra-precise measurement of the Universe’s expansion rate, confirming it’s ...

Artist’s interpretation of the cosmic distance ladder — a succession of overlapping methods used to measure distances across the Universe, where each rung of the ladder provides information that can ...