Astronomers have achieved one of the most precise measurements ever made of the Milky Way’s distant spiral arms, revealing ...

The universe consists of hundreds of billions of galaxies, and for nearby galaxies, distances are mainly measured by classical Cepheids and RR Lyrae (RR Lyr) stars. RR Lyr stars are pulsating variable ...

After a complex statistical analysis of some one million galaxies, a team of researchers at several Chinese universities, and the University of Cordoba was able to publish the results of the study in ...