The sixth man to walk on the moon believed that aliens will bring us a breakthrough in global energy, but only if the world puts down arms. In WikiLeaks’s third dump of Clinton-related emails on Tuesday, the late NASA astronaut Dr. Edgar Mitchell is seen to have been emailing John Podesta, Hillary Clinton’s campaign chairman and former counselor to the president, about extraterrestrial life and zero-point energy. Mitchell, who died in February at age 85, was known as a believer during his life, but the latest leaks reveal he was in contact with high-level officials.

“It is urgent that we agree on a date and time to meet to discuss Disclosure and Zero Point Energy, at your earliest available after your departure,” Mitchell wrote in the first of two emails to Podesta, the first dating from January 18, 2015. “My Catholic colleague Terri Mansfield will be there too, to bring us up to date on the Vatican’s awareness of ETI [extraterrestrial intelligence].”

Podesta is someone who has spoken about alien life before, naming not securing the disclosure of the UFO files as his biggest failure of 2014. Tom DeLonge, former singer for Blink-182, was also revealed to have contacted Podesta about aliens.

Mitchell has previously gone on record with his beliefs that aliens exist. In July 2008, he told Kerrang that governments had long covered up alien visits:

In August 2015, Mitchell told the Observer that the Roswell visitors were observing the U.S. military’s activities at the White Sands proving ground.

But his emails cover concerns that aliens may not want to visit us. “With Russia’s extreme interference in Ukraine, I believe we must pursue another route for peace in space and ZPE [zero point energy] on Earth,” Mitchell said.

In his second email, dated August 18, 2015, he warned about war in space and the impact it would have on potential alien visitors. “Remember, our nonviolent [Extraterrestrial Intelligence] from the contiguous universe are helping us bring zero point energy to Earth,” Mitchell said. “They will not tolerate any forms of military violence on Earth or in space.”

Mitchell references a Skype talk scheduled with Podesta, suggesting these emails were reciprocated. What Podesta told Mitchell in these talks, or whether he agreed with Mitchell’s assertions, is unclear.

The truth may well be out there.