Even after more than a century of research, one of the greatest mysteries about our Sun continues to remain unsolved.

The discovery of 13 diffuse interstellar bands with the longest wavelengths to date could someday solve a 90-year-old mystery. Astronomers have identified the new bands using data collected by the ...

Quasars, the most luminous subset of active galactic nuclei (AGN), reveal the interplay between supermassive black holes and their environments through distinctive absorption features imprinted on ...