Not that it changes your point, but the plaques were on the Pioneer probes; Voyager had the golden record. https://en.wikipedia.org/wiki/Voyager_Golden_Record

Not that it changes your point, but the plaques were on the Pioneer probes; Voyager had the golden record. https://en.wikipedia.org/wiki/Voyager_Golden_Record https://en.wikipedia.org/wiki/Voyager_Golden_Record https://en.wikipedia.org/wiki/Pioneer_plaque https://en.wikipedia.org/wiki/Pioneer_plaque