aug 17, 2017 - The first observation of a collision of two neutron stars (GW170817)[34] is hailed as a breakthrough in multi-messenger astronomy[35] when both gravitational and electromagnetic waves from the event are detected.[36][37] Data from the event provided confirmatory evidence for the r-process theory of the origin of heavy elements like gold.[38][39]
Added to timeline:
Date:
aug 17, 2017
Now
~ 8 years and 9 months ago