![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/nqts1k/GWA-Event.jpg?enable-io=true&enable=upscale&crop=1809%2C1356%2Cx0%2Cy0%2Csafe&width=1070&height=802)
Depiction of Converging Black Holes - AuroreSimonnet.com
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Milestone plaques were dedicated at the 3 antenna sites:
![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/0gmayu/LIGO-HanfordSite.jpg?enable-io=true&enable=upscale&crop=349%2C256%2Cx0%2Cy0%2Csafe&width=269&height=197)
![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/wgdbjs/LIGO-LivingstonSite-2.jpg?enable-io=true&enable=upscale&crop=621%2C405%2Cx0%2Cy0%2Csafe&width=302&height=197)
![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/yhh19w/image-5.png?enable-io=true&enable=upscale&crop=388%2C270%2Cx0%2Cy0%2Csafe&width=284&height=198)
LIGO: Hanford, Washington USA
LIGO: Livingston, Louisiana USA
Virgo Observatory: Cascina (Pisa), ITALY
![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/ih5wgm/R6-Hanford-Plaque.png?enable-io=true&enable=upscale&crop=1140%2C752%2Cx0%2Cy0%2Csafe&width=340&height=224)
![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/ne9c1s/R5-Livingston-Plaque.png?enable-io=true&enable=upscale&crop=1189%2C784%2Cx0%2Cy1%2Csafe&width=340&height=224)
![](https://primary.jwwb.nl/public/k/g/j/temp-ugzijwaacophteryrqnt/ehsmch/R8-Italy-Plaque2.png?enable-io=true&enable=upscale&crop=1122%2C750%2Cx0%2Cy0%2Csafe&width=340&height=227)