This memorandum, dated July 18, 1963, from the Executive Office of the President, National Aeronautics and Space Council, relates to thoughts on the space alien race question. Included are details relating to plans if alien intelligence is discovered, expanding scientific knowledge, the possibility of life on Mars, and diplomatic policy.
National Aeronautics and Space Council
OrgNational Aeronautics and Space Council
OrgMy take is they started to admit it's probable... "Up until a few decades ago it seemed very improbable that intelligent life existed anywhere outside of the solar system." - This is a real declassified document — a July 18, 1963 memorandum from the National Aeronautics and Space Council — also it's actually a fairly sobering policy planning memo from a senior government scientific body asking a reasonable question: if we do encounter alien intelligence, what should U.S. policy be? Source Lin...

This two page memorandum, dated July 18, 1952, relates to increased reports of unidentified flying objects (UFOs). Included in the record are possible explanations of increased sightings, such as technological improvements, historical records of UFOs, and U.S. Air Force opinions on UFOs.