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EXO LIFE
SETI Researchers Gather At ASTRON For Search Beyond Beyond
by Staff Writers
Dwingeloo, Holland (SPX) Jun 12, 2008


A typical galaxy like the milky way contains as many stars as there are grains of sand on all the worlds beaches. Most of these stars have planetary systems and many will have the right conditions for life to flourish. LOFAR can potentially search for artificial radio signals from intelligent civilisations in nearby stellar systems.

ASTRON will welcome about 25 researchers from around the world to a workshop held in Dwingeloo this week focusing on the potential role of LOFAR in the Search for Extra-Terrestrial Intelligence (SETI).

The workshop is organised by Professor Michael Garrett, General Director of ASTRON and professor of radio techniques in astronomy at Leiden University. During the workshop, the researchers will discuss ways in which LOFAR can be used to search for extraterrestrial life.

There are about 100 thousand million stars in the galaxy and most of these are expected to harbour planetary systems; some of these planets might actually be suitable for life.

Many scientists believe that life is probably wide-spread across the galaxy, although technically advanced civilisations might be relatively rare or at least widely separated from each other.

LOFAR (the Low Frequency Array), a new telescope that is currently being built by ASTRON, consists of about 25,000 small antennas that will receive signals from space. Despite the huge distances between stars, the next generation of radio telescopes, such as LOFAR, begin to offer the possibility of detecting radio signals beamed towards the Earth by other intelligent beings.

For the nearest stars, LOFAR might even be able to detect the leakage radiation associated with extraterrestrial radio and TV transmitters.

According to Professor Garrett, LOFAR is well suited to SETI research. "LOFAR can extend the search for extra-terrestrial intelligence to an entirely unexplored part of the low-frequency radio spectrum, an area that is heavily used for civil and military communications here on Earth.

In addition, LOFAR can survey large areas of the sky simultaneously - an important advantage if SETI signals are rare or transient in nature."

One of the researchers attending the workshop is Professor Dan Werthimer, the SETI@home project Scientist at the University of Berkeley in the United States. "SETI searches are still only scratching the surface, we need to use as many different telescopes, techniques and strategies as possible, in order to maximize our chances of success."

Professor Garrett thinks it is high time European scientists began to support their colleagues from the United States in this exciting area of research.

"I cannot think of a more important question humanity can ask and perhaps now answer. Are we truly alone in the Universe or are there other civilizations out there waiting to be discovered? Either way, the implications are tremendous."

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LOFAR
ASTRON
SETI
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EXO LIFE
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Mountain View, Calif. (UPI) May 7, 2008
U.S. scientists, searching for signs of life from faraway planets, are building hundreds of radio telescopes in Northern California, their leader says. Jill Tarter, director of the Center for SETI Research at the SETI Institute, said 42 of the planned 350 telescopes have been built in a mostly uninhabited area about 300 miles northeast of San Jose, Calif., the San Jose Mercury News repo ... read more


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