What: Primus 'A Tribute to Kings' When: August 12 and 13 Where: Gerald R. Ford Amphitheater, Vail More info: grfavail.com If you’ve ever wanted to hear Les Claypool play one of his favorite songs, ...

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 ...

Black holes are a tricky bunch. While Einstein’s theory of relativity predicts they’re common, tracking down the first one was quite a challenge. Unlike stars, black holes themselves don’t emit any ...

Cygnus X-1, located near Eta Cygni, is identified as a strong candidate for a black hole based on observational evidence including its high X-ray emission and the orbital characteristics of its ...

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 ...

Ultimate Classic Rock's readers have spoken, and they're sending Rush into space. The band's classic multi-movement opus "Cygnus X-1" took on all comers in our Rock Star Wars tournament, soaring ...

An artist’s impression of the Cygnus X-1 system, with the black hole appearing in the center and its companion star on the left. New measurements from Cygnus X-1, reported Nov. 3 in the journal ...