July 21 (UPI) -- Pope Leo XIV spoke with astronaut Buzz Aldrin to discuss the 56th anniversary of the Apollo 11 mission. During the call, the two reminisced on the 1969 landing, "reflecting on the mystery of creation, its greatness and fragility."

Pope Leo visited the Vatican’s internationally-recognized observatory, called the Specola Vaticana, where he was able to look through the astronomical center’s historic telescopes.

After praying the Sunday Angelus at his summer retreat in Castel Gandolfo, Leo headed to the astronomical observatory located in the Pontifical Villas.