Virgo and Ligo gravitational-wave detectors announced the observation of a mystery 2.6 solar-mass object, which appears to have merged with a 25 solar-mass black hole.

The interview to Viviana Fafone at TG Leonardo (24/06/2020): https://www.rainews.it/tgr/rubriche/leonardo/index.html?/tgr/video/2020/06/ContentItem-ecb667cb-