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- ET search begins from Southern Hemisphere
-
- By ROB STEIN
- UPI Science Editor
- WASHINGTON (UPI) -- A powerful new radio receiver began scanning the
- sky from the Southern Hemisphere Friday for messages from intelligent life
- from outer space.
- About 100 people gathered at the Argentine Institute of
- Radioastronomy outside Buenos Aires as the high-tech receiver was switched on
- at 10:09 a.m. EDT and began monitoring more than 8 million radio
- frequencies. Nothing was immediately detected.
- "Nobody thinks it's going to get turned on and there will be a,
- 'Hello, how are you?' sitting there. But this is clearly a significant step
- forward," said astronomer Carl Sagan beforehand.
- The new receiver allows astronomers for the first time to
- systematically search the part of the cosmos visible from the Southern
- Hemisphere for radio signals from extraterrestrial beings.
- "If we were extremely lucky, and there were some relatively nearby
- civilization broadcasting us a message, but they were in the Southern
- Hemisphere, we could have blithely been going on all these year and never
- heard it," said Sagan, president of The Planetary Society, which set up the
- receiver.
- Although there is no evidence intelligent life exists on other
- worlds, it is theoretically possible, Sagan said.
- "A lot of scientists, the overwhelming majority, expect there's a lot
- of life and intelligence," Sagan said. "The whole point is we don't know."
- Astronomers are anxious to scan the sky from the Southern Hemisphere
- because they will have access to some of the stars nearest Earth, including
- those in the heart of our own Milky Way galaxy.
- "For the first time, we will be a very capable of searching for
- extraterrestrial intelligence in the other half of the sky," Sagan said by
- telephone from Cornell University in Ithaca, N.Y.
- The $150,000 META II or Megachannel Extraterrestrial Assay II
- receiver will complement META I, which has been scanning the Northern
- Hemisphere's sky from the Harvard-Smithsonian Center for Astrophysics' Oak
- Ridge Obseratory in Harvard, Mass., since 1985.
- "We've sometimes detected some strange signals," said Thomas
- McDonough, who runs the SETI, or Search for Extraterrestrial Intelligence
- project, for the Pasadena, Calif.-based Planetary Society, which promotes
- space exploration.
- "In most cases we've been able to track them down as being from the
- sun or our own civilization. We have on occasion detected strange signals.
- But they have not repeated. The most likely explanation is they are from our
- civilization. But we don't know for sure," McDonough said.
- With its dish antenna 98 feet in diameter, the new receiver can
- simultaneously scan 8.4 million radio frequencies, systemically moving across
- the sky in search of incoming signals.
- There have been previous searches, but the new receiver, run by the
- Organization of Argentine Astronomers, will be the first permanent outpost
- that will continuously sweep the entire sky, McDonough said.
- NASA, meanwhile, is trying to get money for a 10-year, $100 million
- SETI project that would monitor 20 million radio channels every second.
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