Since its discovery 45 years ago, Cygnus X-1 has been one of the most intensively studied cosmic X-ray sources. About a decade after its discovery, Cygnus X-1 secured a place in the history of ...

A black hole on a list of the best deep-sky targets? That sounds like an oxymoron! But for the observer who likes to track down the unusual, this is an ideal target. In a telescope, Cygnus X-1 looks ...

The first black hole to be confirmed, Cygnus X-1, is blasting "dancing jets" into space with the force of 10,000 Suns. While its discovery in 1964 came at a time when scientists still questioned if ...

More than 60 years after it was first spotted, Cygnus X-1 — the first confirmed black hole — is still full of surprises. Researchers have finally measured the energy output of this behemoth's "dancing ...

UK scientists have shed light on the energy streams generated by the black hole Cygnus X-1, finding that it spews "dancing" jets that shine as bright as thousands of suns and travel 335 million mph.

Weighing in at roughly 21 solar masses, the black hole in the X-ray binary system Cygnus X-1 is so massive that it challenges current stellar evolution models, a new study reveals. Ultimately, the ...

As matter swirls violently down toward the event horizon of a black hole, it forms an accretion disk, heating plasma to millions of degrees and blasting X-rays into space. But what exactly does the ...

Astronomers might need to adjust their expectations for black holes. According to the New York Times, an international research team has determined that Cygnus X-1, one of the first discovered black ...

The image below is an artist's impression of the Cygnus X-1 system, which contains the most massive stellar-mass black hole we have ever detected without the use of gravitational waves. The massive ...