National Security Space Launch (NSSL)

E221849

United States government program space launch procurement program

National Security Space Launch (NSSL) is a U.S. Department of Defense program that procures and manages launch services to place critical national security payloads into space.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (6)

Label	Occurrences
National Security Space Launch program	6
National Security Space Launch	3
National Security Space Launch (NSSL) canonical	1
U.S. Department of Defense (via Falcon 9 and Falcon Heavy launches)	1
U.S. Space Force launch program	1
U.S. national security space enterprise	1

How this entity was disambiguated

This entity first appeared as the object of triple T1979787 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: National Security Space Launch (NSSL)
Context triple: [USSF-44, launchContractType, National Security Space Launch (NSSL)]

A. United States civil space program
The United States civil space program is the government-led effort, primarily conducted by NASA, to explore space, conduct scientific research, and develop space technologies for peaceful and civilian purposes.
B. Space Delta 4
Space Delta 4 is a unit of the U.S. Space Force responsible for providing strategic and tactical missile warning and related space-based surveillance capabilities.
C. Space Training and Readiness Command
Space Training and Readiness Command is a major field command of the U.S. Space Force responsible for preparing space forces through training, education, doctrine, and test activities.
D. Space Delta 5
Space Delta 5 is a unit of the U.S. Space Force responsible for conducting space domain awareness and command and control of space operations.
E. Space Delta 2
Space Delta 2 is a unit of the United States Space Force responsible for space domain awareness and tracking objects in Earth’s orbit.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: National Security Space Launch (NSSL)
Target entity description: National Security Space Launch (NSSL) is a U.S. Department of Defense program that procures and manages launch services to place critical national security payloads into space.

A. United States civil space program
The United States civil space program is the government-led effort, primarily conducted by NASA, to explore space, conduct scientific research, and develop space technologies for peaceful and civilian purposes.
B. Space Delta 4
Space Delta 4 is a unit of the U.S. Space Force responsible for providing strategic and tactical missile warning and related space-based surveillance capabilities.
C. Space Training and Readiness Command
Space Training and Readiness Command is a major field command of the U.S. Space Force responsible for preparing space forces through training, education, doctrine, and test activities.
D. Space Delta 5
Space Delta 5 is a unit of the U.S. Space Force responsible for conducting space domain awareness and command and control of space operations.
E. Space Delta 2
Space Delta 2 is a unit of the United States Space Force responsible for space domain awareness and tracking objects in Earth’s orbit.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	United States government program ⓘ space launch procurement program ⓘ
abbreviation	NSSL ⓘ
administeredBy	Space Systems Command ⓘ
beneficiary	United States national security community ⓘ linked to: United States national security apparatus
country	United States ⓘ linked to: United States of America
customer	National Reconnaissance Office ⓘ United States Air Force ⓘ United States Department of Defense ⓘ linked to: Department of Defense United States Space Force ⓘ
domain	outer space ⓘ
field	national security ⓘ space launch ⓘ
focus	assured access to space ⓘ launch reliability ⓘ mission assurance ⓘ
formerlyKnownAs	Evolved Expendable Launch Vehicle program ⓘ
fundingSource	United States federal budget ⓘ
governingBody	Office of the Secretary of the Air Force for Space Acquisition and Integration ⓘ linked to: Office of the Secretary of the Air Force
includesRequirement	launch site operations ⓘ orbit insertion accuracy ⓘ payload integration support ⓘ
jurisdiction	United States federal government ⓘ linked to: United States government
language	English ⓘ
launchProvider	Blue Origin ⓘ Northrop Grumman ⓘ SpaceX ⓘ United Launch Alliance ⓘ
managedBy	United States Space Force ⓘ
operator	United States Department of Defense ⓘ linked to: Department of Defense
phase	Phase 1 ⓘ Phase 2 ⓘ Phase 3 ⓘ
policyGoal	maintain at least two independent launch providers ⓘ
predecessor	Evolved Expendable Launch Vehicle program ⓘ
purpose	place critical national security payloads into space ⓘ procure launch services for national security payloads ⓘ
regulates	launch service performance requirements ⓘ
relatedProgram	National Security Space Architecture ⓘ
relatedTo	United States national defense strategy ⓘ linked to: National Defense Strategy of the United States
replacedProgram	Evolved Expendable Launch Vehicle program ⓘ
riskManagementFocus	mission success for critical payloads ⓘ
sector	military space ⓘ
supportsPayloadType	intelligence and reconnaissance satellites ⓘ military communications satellites ⓘ missile warning satellites ⓘ navigation satellites ⓘ
typeOfService	launch services procurement ⓘ

How these facts were elicited