X‐ray binaries serve as natural laboratories for investigating the extreme physics of accretion and relativistic phenomena. These systems, comprising a compact object – typically a black hole or ...

Warm dense matter occurs inside Jupiter-type giant planets (where it surrounds the rocky core as a metallic liquid at a temperature of many thousands of kelvin) and in the interiors of small stars – ...

“3I/ATLAS presents a new opportunity to study an interstellar object, and observations in X-ray light will complement other observations to help scientists figure out what it is made of,” ESA ...