#Alien news 2015 tv
Current radio and TV transmissions could be heard only a few light-years away with the current radio telescope technology on Earth, but Vakoch says that an advanced civilization would have far more developed techniques for listening.
Brin says there have been other "stunts." In 2008, for instance, the tortilla chip company Doritos sent an advertisement from a radar station in Norway to a potentially habitable star system 42 light-years away.Īdvocates for active SETI say that keen-eared aliens could already pick up some of Earth's ambient transmissions. In 1974, a radio message was broadcast from the Arecibo telescope in Puerto Rico toward a cluster of stars 25,000 light-years away. In contrast, instances of active SETI, also called Messaging Extraterrestrial Intelligence, or METI-beaming deliberate messages to the heavens-have been much rarer. Since the SETI movement began in the 1960s, it has mostly involved using radio telescopes to listen to bands in the electromagnetic spectrum for something out of the ordinary. "If you're going to transform one of the major characteristics … of our planet, we've learned that small groups shouldn't do that peremptorily." We should be doing both." But David Brin, an astrophysicist and science fiction author here, says that Earth's relative radio quietude should not be changed so radically, so quickly. "Either we have international discussion, or we transmit.
Scientists in both camps faced off today at a debate held at a meeting of AAAS (which publishes Science) here.ĭouglas Vakoch, the director of interstellar message composition at the SETI Institute in Mountain View, California, doesn't dismiss the need to consider ethical or political issues, but says that it will be tough to achieve a consensus. But other researchers want to take a more cautious approach and seek an international consensus before outing Earth to the rest of the universe. SAN JOSE, CALIFORNIA-Is it time to send deliberate messages to the stars, in the hopes of reaching alien civilizations? Advocates in the Search for Extraterrestrial Intelligence (SETI) say that moment is long overdue.
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