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

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 ...

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

An international collaboration of astronomers has produced one of the most precise measurements yet of how fast the local ...

In A Nutshell A 37-member international team produced the most precise direct measurement of the Hubble constant ever recorded, with just 1.1 percent uncertainty. By linking a dozen different cosmic ...

The first method involves direct distance measurements from nearby stars and galaxies. In contrast, the second looks further ...

Add Yahoo as a preferred source to see more of our stories on Google. A new “stochastic siren” method uses the gravitational-wave background to sharpen estimates of the Hubble constant. (CREDIT: NASA) ...

The universe appears to be expanding at a staggering speed, much faster than expected. A recent study reinforces this observation, confirming an expansion that contradicts current theoretical models.

The universe is expanding about 10% faster than it should be, and a fresh set of measurements just made the problem harder to ...