Two evangelical authors are set to release a book which claims that Jesuit astronomers at a Vatican-owned observatory in Arizona are using their telescope and another one called LUCIFER to search for extra-terrestrial life.

What is even more astonishing is that the two authors, Tom Horn and Chris Putnam, say in their book that the Vatican is awaiting an alien savior.

The claims in the book, called "Exo-Vaticana: Petrus Romanus, Project LUCIFER, and the Vatican's astonishing plan for the arrival of an alien savior" are the result of research the two authors conducted at the Mount Graham International Observatory.

Although Lucifer in the Bible is associated with Satan, the word has its origins in Hebrew akin to light.

The researcher also examined Vatican records.

While their claims seem too difficult to believe, Horn and Putnam have backed up their research with primary sources.

They are currently discussing their findings with the media.

On April 1 they appeared on the show of American Messianic Jew Sid Roth, where Putnam revealed what they have uncovered in their research.

"The records in the Vatican go back centuries," said Putnam, who is a theologian. "I read two chapters of history concerning the Vatican's interest in extra-terrestrials."

"They have a whole theology developed around what they call the Principle of Plentitude, meaning anything God could do he would do," said Putnam.

"So they consider the existence of aliens the inevitable consequence of God's omnipotence."

Horn and Putnam were granted permission to visit the observatory on Mount Graham, which hosts the Vatican Advanced Technology Telescope (VATT), in September 2012.

Not only were they able to discuss the study of deep space with the Jesuit astronomers there, but they also gained access to one the top Vatican astronomers in Rome.

Horn said Brother Guy Consolmagno, who has also been called the papal astronomer, told the authors some astounding information during five interviews.

"He says without apology that very soon the nations of the world are going to look to the aliens for their salvation", said Horn.

Consomagno also gave the authors private Vatican documents which reveal much of the thinking of high-level theologians and astronomers within the Church.

Horn said these documents show that they believe that we are soon to be visited by an alien savior from another world.

To conduct their research, Vatican astronomers are using a German-owned telescope at the Mount Graham International Observatory which uses the acronym LUCIFER to shorten a very long name.

The Large Binocular Telescope (LBT) has an infrared camera and spectroscope.

Putnam said it is as powerful as the Hubble Telescope.

Vatican research of the heavens dates back to the late 16th century when the Church conducted studies to reform the Julian calendar.

Before it established the VATT on Mount Graham in 1987, the Vatican had built several observatories around Rome since the 1500s.

Putnam and Horn previously published a best-selling book in 2012 predicting the resignation of Pope Benedict XVI and the coming of a final pope preceding the second coming of Jesus.