By: Xabier Cid Vidal
![](https://igfae.usc.es/igfae/wp-content/uploads/2018/12/ligo_virgo-928x1024.png)
LIGO and Virgo Announce Four New Gravitational-Wave Detections
December 13, 2018The observatories are also releasing their first catalog of gravitational-wave events On Saturday, December 1, scientists attending the Gravitational Wave Physics…
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