http://gizmodo.com/another-gravitati...tio-1792434494

"In the next few weeks, an upgraded version of an experiment very
similar to the two LIGO experiments—called Virgo near Pisa, Italy—will
go back online. The addition of Virgo will give scientists the ability
to pinpoint where in the sky the gravitational waves are located. That
detector (and hopefully more detectors to come), combined with observing
power of some of the most advanced telescopes, could help astronomers
learn about the wildest events that happen in our universe, like black
holes colliding with neutron stars."