IR astronomers aim to discover ETs in next 25 years

17 Jun 2002

(Reuter) Scientists believe they could discover life outside the solar system within the next 25 years. "Planet hunters" from across the world have gathered in Spain this week to discuss infrared interferometry, a technology used in the search for life outside the solar system.

Last October Swiss astronomers detected a planet outside the solar system for the first time. Shortly afterwards, American scientists discovered two other planets.

Astronomers meeting in Toledo, excited by the discoveries, say the question is no longer whether life can be discovered on other planets but simply when it can be done. A proposed infrared interferometer, 40 times more powerful than Hubble, would be capable of determining through infrared rays whether newly discovered planets have the necessary conditions, like water and oxygen, to shelter life. Both NASA and the European Space Agency have separately started to develop infrared technology, but both say international cooperation is needed for such a project. ESA in February unveiled the first photographs taken by its Infrared Space Observatory, which can see through dense dust clouds.