The most precise measurement yet of how fast the Universe is expanding shows we have a real and serious problem on our hands.

The new study used the known distance to a galaxy called M106/NGC 4258 — a spiral galaxy in the constellation Canes Venatici — as a reference point. The universe is expanding faster than astronomers ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

For the last several years, cosmology – the study of the universe as a whole – has been facing a major tension. The two main approaches to measure the expansion of the universe today should give us ...

Since we use km/s for velocity and megaparsec for extragalactic distances, solving for the Hubble constant gives us the strange units of the Hubble constant being (km/s)/Mpc, which actually reduces ...