A comprehensive new study combines decades of research to reveal that we're missing an essential component in our ...

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

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. If you want to know how something in the Universe works, all you need ...

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 ...

Trying to measure the size of the universe is no easy task. We know that the universe is expanding, though the exact rate of this expansion is not yet fixed. So one method that astronomers use to tell ...

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

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

The cosmic distance ladder is the world’s longest ruler, built to measure the universe. Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the ...