Man 'must prepare to meet alien life forms'

St Andrews University scientist tells conference that man now has more chance than ever of discovering life on other planets.

The NGC 4414 galaxy as pictured by the Hubble Space Telescope

Man has more chance than ever of discovering life on other planets - and mankind needs to prepare itself for meeting alien life forms for the first time, a Scots scientist is to tell a conference on Monday.

The conference – The Detection of Extra-Terrestrial Life and the Consequences for Science and Society – is taking place at the Royal Society in London on January 25 and 26 and has brought together leading astronomers and scientists from around the world.

One of lead organisers – Dr Martin Dominik of the School of Physics and Astronomy, University of St Andrews – says rapid advances in deep-space exploration techniques mean the discovery of life on other worlds in our lifetime is now a real possibility.

He said: "Astronomers are now able to detect planets orbiting stars other than the Sun where life may exist, and living generations could see the signatures of extra-terrestrial life being detected.

"Should it turn out that we are not alone in the Universe, it will fundamentally affect how humanity understands itself - and we need to be prepared for the consequences."

Two years ago, Dr Dominik and international colleagues discovered the most earth-like planet found to date - OGLE-2005-BLG-390Lb – using the technique of gravitational microlensing.

The new planet has a mass five times that of Earth and is approximately 20,000 light years from us near the centre of the Milky Way where it orbits its parent star, a red dwarf some five times less massive than the Sun.

OGLE-2005-BLG-390Lb is a small cold world, too cold to support life, but its discovery by detecting the way it bends and distorts light was hailed as a groundbreaking result in the search for extra-terrestrial life.

Speakers at the London conference include Lord Rees, President of the Royal Society and Astronomer Royal.

He said: "Were we to find life, even the simplest life, elsewhere that would clearly be one of the great discoveries of the 21st Century. I suspect there could be life and intelligence out there in forms that we can't conceive.

"And there could, of course, be forms of intelligence beyond human capacity, beyond as much as we are beyond a chimpanzee."

"Technology has advanced so that for the very first time we can actually have the realistic hope of detecting planets no bigger than the earth orbiting other stars."

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