On August 15, 2012, a complex, high-powered radio transmission was sent from the Arecibo Observatory in Puerto Rico towards the constellation Sagittarius. The signal consisted of a digital stream of approximately 10,000 Twitter messages solicited for the purpose by the National Geographic Channel, bearing the hashtag “#ChasingUFOs” (a promotion for one of the channel’s TV series). The sponsor also included a series of video vignettes featuring verbal messages from various celebrities.
The transmission was sent on the 35th anniversary of the reception of a mysterious signal that was interpreted as an alphanumeric sequence, “6EQUJ5,” dubbed the “Wow!” signal, from the general direction of the star Tau Sagittarius. This signal was received by Ohio State University’s Big Ear radio telescope in the United States, and was noticed a few days after August 15, 1978, by astronomer Jerry R. Ehman.
On August 15 in 1971, President Richard Nixon ended convertibility of the United States dollar into gold by foreign investors. The dollar has remained fiat money ever since, but — mysteriously! — did not succeed in retaining its previous value.
But then, the dollar under the previous quasi-gold, Bretton-Woods Agreement wasn’t stable either, which is why Nixon felt compelled to close the gold window.