VATICAN CITY — E.T. phone Rome.

Four hundred years after it locked up Galileo for challenging the view that the Earth was the center of the universe, the Vatican has called in experts to study the possibility of extraterrestrial alien life and its implication for the Catholic Church.

"The questions of life's origins and of whether life exists elsewhere in the universe are very suitable and deserve serious consideration," said the Rev. Jose Gabriel Funes, an astronomer and director of the Vatican Observatory.

Funes, a Jesuit priest, presented the results Tuesday of a five-day conference that gathered astronomers, physicists, biologists and other experts to discuss the budding field of astrobiology — the study of the origin of life and its existence elsewhere in the cosmos.

Funes said the possibility of alien life raises "many philosophical and theological implications" but added that the gathering was mainly focused on the scientific perspective and how different disciplines can be used to explore the issue.

Chris Impey, an astronomy professor at the University of Arizona, said it was appropriate that the Vatican would host such a meeting.

"Both science and religion posit life as a special outcome of a vast and mostly inhospitable universe," he told a news conference Tuesday. "There is a rich middle ground for dialogue between the practitioners of astrobiology and those who seek to understand the meaning of our existence in a biological universe."

Thirty scientists, including non-Catholics, from the U.S., France, Britain, Switzerland, Italy and Chile attended the conference, called to explore among other issues "whether sentient life forms exist on other worlds."

Funes set the stage for the conference a year ago when he discussed the possibility of alien life in an interview given prominence in the Vatican's daily newspaper.

The Church of Rome's views have shifted radically through the centuries since Italian philosopher Giordano Bruno was burned at the stake as a heretic in 1600 for speculating, among other ideas, that other worlds could be inhabited.

Scientists have discovered hundreds of planets outside our solar system — including 32 new ones announced recently by the European Space Agency. Impey said the discovery of alien life may be only a few years away.

"If biology is not unique to the Earth, or life elsewhere differs bio-chemically from our version, or we ever make contact with an intelligent species in the vastness of space, the implications for our self-image will be profound," Impey said.