Washington D.C., Nov 20, 2024 / 08:00 am

The unresolved question of whether life exists on other planets continues to spark curiosity from the public and the interest of scientists — but one Catholic physicist working on missions to search for potential life also recognizes it as an opportunity to see the glory of God.

Jonathan Lunine, a convert to the Catholic faith and the chief scientist for NASA’s Jet Propulsion Laboratory in Pasadena, California, spoke to roughly 100 Catholic scientists about the subject at an event in Washington, D.C., on Friday, Nov. 15.

The lecture followed a Gold Mass, celebrated for Catholic scientists, at the Cathedral of St. Matthew the Apostle. A Gold Mass is held on the feast of St. Albertus Magnus — a Dominican friar, medieval scientist, patron saint of scientists, and mentor to St. Thomas Aquinas.

It was sponsored by The Catholic University of America and the local chapter of the Society of Catholic Scientists, which seeks to respond to St. John Paul II’s calling for Catholic scientists to “integrate the worlds of science and religion in their own intellectual and spiritual lives.”

“I’m not a theologian; I’m a scientist,” Lunine told the crowd as they finished eating brunch at the Beacon Hotel, which is a short walk from the cathedral, about a half-mile north of the White House.

Lunine — whose work at NASA has involved the search for the possibility of unintelligent microbial life on Jupiter’s moon Europa and Saturn’s moons Enceladus and Titan — said that as a scientist, “this has been a wonderful journey, being able to participate in these missions.”

As a Catholic scientist, he said he sees “the gift of the mind” as a gift that “God has given us to … understand the glory of God’s creation.”

Microbial life on other planets, if it were to be found, he said, would be a “manifestation of the order that is baked into the universal design that God created when he created the universe” and created so that “beauty might shine forth from that very order.”

Lunine said those three moons are the most likely locations to have the conditions to sustain life that we have the ability to reach, particularly due to the prevalence of water. The mission to Europa should conclude between 2030 and 2035, the mission to Titan should conclude in the 2030s, and the mission to Enceladus should conclude in the 2040s, he said.

If microbial life were to be discovered on any of those moons, Lunine told CNA, it would show us that there are “other places beyond the Earth where life began.”

Lunine said more theological questions would be raised if the search for life on other planets develops into a search for intelligent and self-aware life that developed on another planet. This would lead to questions like “Are they saved?” or “Are they fallen?”, he said.

If intelligent life exists on other planets, he said it would be “hard to imagine” that none had fallen from God’s grace, noting that it is easy to fall and “even the angels, some of them have fallen.” He said this would create questions such as “did Christ come to their world in a separate incarnation” to save them, and how would humanity would “be the central pivot point of cosmic history.”

The Catholic Church holds no official position on whether intelligent life exists on other planets, but Pope Francis commented on the subject in 2015, saying: “Honestly I wouldn’t know how to answer,” adding: “Until America was discovered we thought it didn’t exist, and instead it existed.”

The pontiff, however, did affirmatively say that everything in the universe has been created through divine intelligence and “is not the result of chance or chaos.”