LIGO and Virgo observatories jointly detect black hole collision

In August, detectors on two continents recorded gravitational wave signals from a pair of black holes colliding. This discovery, announced today, is the first observation of gravitational waves by three different detectors, marking a new era of greater insights and improved localization of cosmic events now available through globally networked gravitational-wave observatories.
The collision was observed Aug. 14 at 10:30:43 a.m. Coordinated Universal Time (UTC) using the two National ... More at https://www.nsf.gov/news/news_summ.jsp?cntn_id=243239&WT.mc_id=USNSF_51&WT.mc_ev=click
This is an NSF News item.

Source: NSF News - September 27, 2017 Category: Science Source Type: news