Water, water, everywhere, and now some out in space.

Astronomers said on Wednesday they had discovered the best evidence yet of water outside our own solar system -- in the atmosphere of a giant planet 60 light years from Earth.

Writing in the scientific journal Nature, researchers said the planet itself, HD 189733b, was unlikely to harbor life but evidence supported the search for life in other solar systems.

"We're thrilled to have identified clear signs of water on a planet that is trillions of miles away," Giovanna Tinetti, a European Space Agency fellow at the Institute d'Astrophysique de Paris in France who led the study, was quoted as saying in an accompanying news release.

A dream of mine is that during my lifetime we discover life on other planets. It would be the most amazing and likely discovery that I can imagine.