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 ...

Cepheid variable star RS Puppis pulses with a regular period. (NASA, ESA, Hubble Heritage Team; Howard Bond/STScI & Penn ...

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 ...

An international team of astronomers has produced a precise measurement of the universe’s current expansion rate, ...

The universe is stretching apart faster than our current theories of physics can explain, and a new study has just confirmed that the discrepancy is not a fluke.

Scientists confirm the universe is expanding faster than expected, deepening the mystery known as the Hubble tension.

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

Scientists have tested gravity across some of the largest structures in the universe and ...