Edgar Mitchell, one of just 12 human beings who walked on the moon, has died. Mitchell was 85. NASA Administrator Charles Bolden said in a statement, "He is one of the pioneers in space exploration on whose shoulders we now stand." On February 5, 1971 ... Mitchell became the sixth man to walk on the lunar surface. [He] found the trip to be a profound experience. "Looking at Earth from space and seeing it was a planet in isolation ... that was an experience of ecstasy, realizing that every molecule in our bodies is a system of matter created from a star hanging in space," Mitchell told the UK Telegraph in 2014. "The experience I had was called Samadhi in the ancient Sanskrit, a feeling of overwhelming joy at seeing the Earth from that perspective." Fascinated and frustrated by the relationship between religion and science, he was very public about seeking links between the known and unknown. He said he had conducted ESP experiments on the mission. He was also a believer in extraterrestrial activity, and was convinced UFOs had visited Earth. He told Bloomberg Business that the 1947 Roswell incident ... was covered up. "It's not just military. It's a cabal of organizations primarily for a profit motive," he told the publication. Mitchell also created the Institute of Noetic Sciences to research paranormal phenomena and consciousness. In addition, he was co-founder of the Association of Space Explorers, an organization for space travelers.