ESA’s Integral gamma-ray observatory has discovered a new, highly populated class of X-ray fast ‘transient’ binary stars, undetected in previous observations. With this discovery, Integral confirms ...

A strange X-ray beacon from deep space has revived a decades-old mystery and opened a window onto one of the universe’s most ...

The X-ray-emitting binary system Cygnus X-3 features a massive star donating matter to a compact object, probably a black hole. That may explain its perplexing brightness. When you purchase through ...

Astronomers uncovered that a well-known X-ray binary, whose exact nature has been a mystery to scientists until now, is actually a hidden ultraluminous X-ray source. X-ray binaries are intriguing ...

Neutron stars—the dense remnants of massive stellar explosions—and their presence in X‐ray binaries serve as natural laboratories for extreme physics. In these systems, matter is transferred from a ...

Imagine two stars with winds so powerful that they eject an Earth’s worth of material roughly once every month. Next, imagine those two winds colliding head-on. Such titanic collisions produce ...

The X-ray Imaging and Spectroscopy Mission (XRISM), a Japan Aerospace Exploration Agency (JAXA) and NASA collaboration with ...

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 ...

In context: Binary systems composed of a supermassive black hole and a much smaller singularity orbiting around it are crucial for studying gravitational wave events. Detecting them, however, is ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Stars are the fundamental building blocks of our ...

Astronomers have spotted pure chaos lurking in the cosmos. Thousands of light years away from Earth, a small yet intensely heavy star is releasing bursts of material as powerful as repeating atomic ...

X-ray binaries are intriguing systems consisting of two celestial bodies: a normal star and a compact, dead object such as a black hole or a neutron star that sucks material from its stellar companion ...