Documents / Official release
This Defense Intelligence Reference Document, DIA-08-1004-004, is dated 6 April 2010. The Acquisition Support Division of the Defense Intelligence Agency's Defense Warning Office prepared it as one in a series of advanced technology reports from FY 2009 under the Advanced Aerospace Weapon System Applications Program. It reviews the physics of traversable wormholes and flat-faced "stargate" solutions, and it covers how negative energy might be generated in the laboratory. It concludes that the key technical challenge is identifying and producing exotic matter.
From the source: Release of 2026-09-18 Incident: 4/6/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD examines traversable wormholes and “stargates” as hypothetical spacetime structures within general relativity that theoretically offer a means of faster-than-light travel or communication. The report focuses extensively on the requirement for exotic, negative-energy matter to stabilize and keep such geometries open for the passage of macro-scale objects. It reviews standard wormhole models, describes a flat-throated “stargate” variant, and argues that violations of general relativity's standard energy conditions do not physically rule such structures out, citing microscopic, transient negative-energy effects observed in Casimir-type laboratory phenomena. However, the document acknowledges that the transition from microscopic quantum fluctuations to macroscopic engineering is an unresolved barrier. While small-scale negative-energy effects are observable, there is no known mechanism to generate, concentrate, or stabilize the amounts of exotic matter proposed to be required to sustain a traversable macroscopic wormhole. Ultimately, while the paper frames wormhole concepts within accepted relativistic physics, it confirms that the gap between theoretical models and any realizable technology remains enormous.
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but all are based on Newtonian mechanics. The limiting speed of space flight,
based on any of these modes, is the speed of light. It is important to point out
that for the interstellar travel application, Newtonian rocket propulsion modes
suffer from enormous mass ratios> 105 - 10100 (depending on the specific
impulse) for spacecraft cruise velocities > 0.0Sc, if the travel time is
constrained to within 100 years for a one-way interstellar voyage. If the cruise
velocity is increased to sub-relativistic, near-relativistic, or even ultra
relativistic speeds and thus reduces the one-way travel time, then the mass
ratio increases ( exponentially!). The mass ratio is the initial spacecraft mass
(payload +structure+ propellant) at launch divided by the final spacecraft
mass (payload + structure) at "burnout." The large ratios given above show
that Newtonian rockets consist mostly of propellant in order to propel the
propellant, along with a given tiny payload, through interstellar space. The
specific impulse is a measure of rocket propulsion system efficiency: how
much impulse (thrust multiplied by time) is produced per unit of mass of
propellant expenditure. It is desired that rocket propulsion systems possess a
very high specific impulse in order to reduce the mass ratio, and hence
propellant mass requirement, to reasonable levels.
The non-traditional propulsion modes (sails, ramjets, beamed power, etc.)
have different efficiencies and constraints, but they are all still dependent on
Newtonian mechanics, even though their mass ratio and specific impulse
characteristics are slightly improved over that of the traditional modes. But all
traditional and non-traditional propulsion modes come with a great cost in
interstellar voyage travel time. At non-relativistic and sub-relativistic cruise
speeds, it will take explorers several human lifetimes to reach stellar
destinations. At low relativistic to ultra-relativistic cruise speeds, the travel
time will be reduced to hours, days, weeks, months, or years. However, at
these cruise speeds, relativistic time dilation will kick in, and the returning
interstellar voyagers will find that decades to thousands of years have elapsed
on Earth since their launch date and that their families and culture no longer
exist or are unrecognizable. This is an undesirable outcome for any interstellar
voyage. Furthermore, traditional Newtonian propulsion cannot transcend time
or spacetime dimensions or universes.
The solution to this problem is to dispense entirely with long interstellar
voyage times or the undesirable outcome of relativistic time dilation. Explorers
could deploy a wormhole-stargate near the Earth's surface, in Earth's orbit, or
anywhere in the solar system they like and just pass through the "stargate"
and come out the other side in remote spacetime within seconds, moving
through the throat at low cruise speeds (30 mph!) and with no time dilation
effects. Explorers could travel through the wormhole-stargates in small scout
ships or send probes unencumbered by either enormous propellant mass
ratios or extensive life support provisions. Effective travel time through the
Cosmic Neighborhood via stargates would become irrelevant but could be
estimated to be many times or thousands of times the speed of light. Explorers
could spend all day investigating the remote spacetime location and then
return home through the stargate in time to have dinner with their families. If
explorers were to really push the envelope, they would design their stargate
so they could return from their voyage in time to wave goodbye to themselves
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vii Not linked to a story yet.
Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 42 pages are in the text index: search them above, or from the library's search.