P< 1.3$ \end{document} Myr, \documentclass{aastex ... Liu (1998, private communication) for advance news about the star near 16 Cygni A. This work was done in partial fulfillment of the requirements ...

Stellar-mass black holes typically form after a star goes supernova and collapses. However, the discovery of the first-ever ...

The system, called V404 Cygni, was thought to be a black hole and a companion star, but a second star billions of kilometres away was also found to be gravitationally connected to the duo.

Astronomers have discovered a third star in the V404 Cygni system, now a rare triple black hole system 8,000 light-years away. This finding challenges existing black hole formation theories ...