War.gov PURSUEDepartment of State
GovernmentJul 18, 1963Analysis complete

59 214434 SP 16 [7.18.1963

The released record says the possibility of running across an alien intelligent race in our solar system is negligible. File: 59 214434 SP 16 [7.18.1963. 59 214434 SP 16 [7.18.1963 combines an official, downloadable document, 6 extracted claims, 1 evidence record, and 2 timeline entries across 6 source pages, and file-level provenance that can be compared with related release records.

File
Document · Release 01
Date
Jul 18, 1963
Extent
6 pages
Agency
Department of State

Probed Assessment

Key takeaways

  • The possibility of running across an alien intelligent race in our solar system is negligible.
  • The most widely held theory of stellar formation would predict the formation of planetary systems to be a natural consequence of stellar evolution.
  • There is a huge number of planets in the galaxy, and life is quite likely to arise spontaneously on a large number of these.

Why it matters

59_214434_SP 16 [7.18.1963 is an officially released 6-page record with searchable page text, page-specific claim locators, dated events where supported, and document-level provenance.

Corroboration

The release establishes official provenance for 59_214434_SP 16 [7.18.1963, but its reported observations, judgments, and interpretations remain source claims unless supported by independent records.

Open questions

  • Which companion records or contemporaneous sources, if any, independently corroborate the document’s key claims?

Probed separates this editorial assessment from the source claims below. It summarizes what the released artifact supports; it is not independent verification.

Official Description from War.gov

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.

Preserved verbatim as source metadata. This wording is separate from Probed’s file-specific description and assessment.

File Context

Related entities

8

Release provenance

Release
Release 01
Official ID
release-01-file-011-59-214434-sp-16-7-18-1963
Cleared
May 8, 2026
Official release source

Referenced Timeline

  1. Page 3

    Discovery of Martian moons

    The discovery of both Martian moons within a week.

  2. Page 1

    Date of memorandum

    The memorandum was dated July 18, 1963.

Source Claims

Claims are attributed to the released source and remain distinct from Probed’s assessment and tracker findings.

Reported by source3Source interpretation2Source prediction1
Source reportedAssertedPage 1

The possibility of running across an alien intelligent race in our solar system is negligible.

The consensus of scientific view says, with quite good reasons, that the p~ssib.lity of running across an alien intelligent race in our solar system • s negligible.

Source reportedAssertedPage 2

The most widely held theory of stellar formation would predict the formation of planetary systems to be a natural consequence of stellar evolution.

The most widely held theory of stellar formation would predict the formation of planetary systems to be a natural consequence of stellar evolution.

Source reportedAssertedPage 2

There is a huge number of planets in the galaxy, and life is quite likely to arise spontaneously on a large number of these.

Thus, we have the current scientific theory and data not only that there are a huge number of planets in the galaxy, but that life is quite likely to arise spontaneously on a large number of these.

InterpretationAssertedPage 3

The discovery of both Martian moons within a week in the latter part of the Nineteenth Century indicates they are large artificial space stations.

many flying saucer advocates claim that the discovery of both Martian moons within a week in the latter part of the Nineteenth Century indicates that they are large artificial space stations, otherwise they would have been found earlier.

InterpretationAssertedPage 3

If we were to discover Martians on the moon, it would result in surprisingly little readjustment of our scientific thinking.

If we were to discover Martians on the moon, it would result in surprisingly little re- adjustment of our scientific thinking.

PredictionAssertedPage 5

The probability that we will find another intelligence race is finite and perhaps should not be completely ignored.

Although all plausible scientific thinking suggests that we will not find any other intelligence race, the probability that we will is finite, and perhaps should not be completely ignored.

Source Material & Evidence

document

Memorandum from the Executive Office of the President, National Aeronautics and Space Council

RELEASE-01-FILE-011-59-214434-SP-16-7-18-1963

Research Map

8 entities · 0 grounded links

Lines appear only when two entities share a row-level source claim or dated timeline event. Unconnected nodes remain visible without implying a relationship.

UAP/Disclosure Graph
8 nodes0 links
No grounded pairwise links in this file