Many black holes detected to date appear to be part of a pair. These binary systems comprise a black hole and a secondary object—such as a star, a much denser neutron star, or another black hole—that spiral around each other,

These systems are made up of the black hole and a secondary object like a star, much denser neutron star, or another black hole. The binary system then spirals around each other and are drawn together by the black hole’s gravity.

Most black holes are usually part of a pair, made up of a black hole and a star or another black hole that orbit each other in a celestial dance. But astronomers said finding this new system – comprising a black hole named V404 Cygni and two stars – is “super exciting” because it raises the possibility there may be more of these out there.