A dim star orbiting the Milky Way is drawing attention for its almost pristine composition. Named PicII-503, it contains barely any heavy elements, making it one of the most extreme examples of an ...

The composition of the universe — the elements that are the building blocks for matter — is ever-changing and evolving, thanks to the lives and deaths of stars, according to a study. The study, ...

Elemental mapping is an imaging technique used to visualize the spatial distribution of elements within a material. X-ray fluorescence (XRF) spectrometry is a widely used analytical technique for this ...