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Vandenberg Space Launch Complex 4: SLC-4E, Overview & LZ-4

Space Launch Complex 4 (SLC-4) is a launch and landing site at Vandenberg Space Force Base, California, U.S. It has two pads, both of which are used by SpaceX for Falcon 9, one for launch operations, and the other as Landing Zone 4 (LZ-4) for SpaceX landings.

Language: English [EN]
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Vandenberg Space Launch Complex 4 topic overview

The analysis highlights SLC-4E, Overview and LZ-4 as prominent areas in the source structure around Vandenberg Space Launch Complex 4.

Related topics
50
Source areas
6
Connected nodes
56
Extracted relationships
26
Concept neighborhoods
23
Bridge connections
56

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 29 topics
SLC-4E · 11 topics
LZ-4 · 4 topics
Atlas-Agena · 2 topics
Gallery · 2 topics
SLC-4W · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Associated rockets
Current: Falcon 9 · Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV · Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 23G
First landing
7 October 2018 Falcon 9 Block 5 (SAOCOM 1A)
First launch
14 August 1964 Atlas-Agena D (KH-7 Gambit 4010) · 12 July 1963 Atlas-Agena D (KH-7 Gambit 4001)
Landings
35 (35 successful, 0 failure)
Last landing
19 June 2026 Falcon 9 Block 5 (NROL-179)
Last launch
22 August 2026 Falcon 9 Block 5 (Starlink G15-20) · 18 October 2003 Titan 23G (USA-172 / DMSP)

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

SLC-4E

Atlas-Agena

SLC-4W

LZ-4

Gallery

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Vandenberg Space Launch Complex 4 connects Entity context

The extracted context around Vandenberg Space Launch Complex 4 shows recurring relationship patterns in the source. For example, Vandenberg Space Launch Complex 4 → Current: Falcon 9, Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 23G, Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV Another extracted example is Vandenberg Space Launch Complex 4 → 12 July 1963 Atlas-Agena D (KH-7 Gambit 4001), 14 August 1964 Atlas-Agena D (KH-7 Gambit 4010). Use these groups to spot repeated connection types before inspecting the individual relationships.

Vandenberg Space Launch Complex 4

Top relations

Associated rockets · 3
Vandenberg Space Launch Complex 4 → Current: Falcon 9, Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 23G, Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV
First launch · 2
Vandenberg Space Launch Complex 4 → 12 July 1963 Atlas-Agena D (KH-7 Gambit 4001), 14 August 1964 Atlas-Agena D (KH-7 Gambit 4010)
Last launch · 2
Vandenberg Space Launch Complex 4 → 18 October 2003 Titan 23G (USA-172 / DMSP), 22 August 2026 Falcon 9 Block 5 (Starlink G15-20)
Launches · 2
Vandenberg Space Launch Complex 4 → 292, 93
Operator · 2
Vandenberg Space Launch Complex 4 → SpaceX (tenant), United States Space Force (owner)
SLC-4 (PALC-2-4 / SLC-4E) launch history · 2
Vandenberg Space Launch Complex 4 → Current: Falcon 9, Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV
Status · 2
Vandenberg Space Launch Complex 4 → Active, Repurposed
First landing · 1
Vandenberg Space Launch Complex 4 → 7 October 2018 Falcon 9 Block 5 (SAOCOM 1A)
Landings · 1
Vandenberg Space Launch Complex 4 → 35 (35 successful, 0 failure)
Last landing · 1
Vandenberg Space Launch Complex 4 → 19 June 2026 Falcon 9 Block 5 (NROL-179)

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

launch titan spacex complex landing falcon first slc-4w slc-4e pad atlas-agena site space launches satellite launched use pads vandenberg zone

Vandenberg Space Launch Complex 4 relationships Subject–Predicate–Object triples

TTTA extracted 26 structured relationships around Vandenberg Space Launch Complex 4. Examples in this analysis include Vandenberg Space Launch Complex 4 → Associated rockets → Current: Falcon 9 and Vandenberg Space Launch Complex 4 → Associated rockets → Retired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Vandenberg Space Launch Complex 4Associated rocketsCurrent: Falcon 91.00infobox
Vandenberg Space Launch Complex 4Associated rocketsRetired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV1.00infobox
Vandenberg Space Launch Complex 4Associated rocketsRetired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 23G1.00infobox
Vandenberg Space Launch Complex 4First landing7 October 2018 Falcon 9 Block 5 (SAOCOM 1A)1.00infobox
Vandenberg Space Launch Complex 4First launch14 August 1964 Atlas-Agena D (KH-7 Gambit 4010)1.00infobox
Vandenberg Space Launch Complex 4First launch12 July 1963 Atlas-Agena D (KH-7 Gambit 4001)1.00infobox
Vandenberg Space Launch Complex 4Landings35 (35 successful, 0 failure)1.00infobox
Vandenberg Space Launch Complex 4Last landing19 June 2026 Falcon 9 Block 5 (NROL-179)1.00infobox
Vandenberg Space Launch Complex 4Last launch22 August 2026 Falcon 9 Block 5 (Starlink G15-20)1.00infobox
Vandenberg Space Launch Complex 4Last launch18 October 2003 Titan 23G (USA-172 / DMSP)1.00infobox
Vandenberg Space Launch Complex 4Launch pad2 (1 became a landing zone for Falcon 9)1.00infobox
Vandenberg Space Launch Complex 4Launch siteVandenberg Space Force Base1.00infobox
Vandenberg Space Launch Complex 4Launches2921.00infobox
Vandenberg Space Launch Complex 4Launches931.00infobox
Vandenberg Space Launch Complex 4Location.mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct,.mw-pars…1.00infobox
Vandenberg Space Launch Complex 4OperatorUnited States Space Force (owner)1.00infobox
Vandenberg Space Launch Complex 4OperatorSpaceX (tenant)1.00infobox
Vandenberg Space Launch Complex 4Orbital inclination range55–145°1.00infobox
Vandenberg Space Launch Complex 4Short nameSLC-41.00infobox
Vandenberg Space Launch Complex 4SLC-4 (PALC-2-4 / SLC-4E) launch historyCurrent: Falcon 91.00infobox
Vandenberg Space Launch Complex 4SLC-4 (PALC-2-4 / SLC-4E) launch historyRetired: Atlas-Agena, Atlas SLV-3, Titan IIID, Titan 34D, Titan IV1.00infobox
Vandenberg Space Launch Complex 4StatusActive1.00infobox
Vandenberg Space Launch Complex 4StatusRepurposed1.00infobox
Vandenberg Space Launch Complex 4Time zoneUTC−08:00 (PST)1.00infobox
Vandenberg Space Launch Complex 4Total launches3851.00infobox
Vandenberg Space Launch Complex 4• Summer (DST)UTC−07:00 (PDT)1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Vandenberg Space Launch Complex 4 bring nearby vocabulary together. In this analysis, examples include Force, Pads and Complex. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Vandenberg Space Launch Complex 4
    • Force
    • Pads
    • Complex
    • Launch
    • Vandenberg
    • Landing
    • Landings
    • Titan
    • Site
    • Space
    • Slc-4w
    • Slc-4
  • vandenberg space launch complex 4
    • Force
    • Pads
    • Complex
    • Launch
    • Vandenberg
    • Space
    • Pad
    • Landing
    • Landings
    • Titan
    • Site
    • Falcon
  • vandenberg space force base
    • Force
    • Pads
    • Space
    • Vandenberg
    • Iiid
    • Iv
    • Landings
    • Atlas-agena
    • Slc-4
    • Operated
    • Site
    • Landing
  • f9 landings
    • Lz-4
    • Pads
    • Space
    • Vandenberg
    • Zone
    • Spacex
    • Satellite
    • Atlas
    • Iiid
    • Iv
    • First
    • Atlas-agena
  • falcon 9
    • Landing
    • Pad
    • Spacex
    • First
    • Zone
    • Launch
    • Slc-4e
    • Iiid
    • Iv
    • Atlas-agena
    • Lz-4
    • Rtls
  • atlas
    • Rockets
    • Slc-4
    • Launched
    • Satellite
    • Iiid
    • Iv
    • Landings
    • Atlas-agena
    • First
    • Force
    • Iiib
    • Lz-4
  • launch pads
    • Space
    • Complex
    • Pad
    • Landings
    • Landing
    • Titan
    • Site
    • Falcon
    • First
    • Vandenberg
    • Slc-4w
    • Spacex
  • atlas-agena
    • Iiid
    • Iv
    • Force
    • Iiib
    • Rockets
    • 23g
    • Operated
    • Falcon
    • Last
    • Launches
    • Titan
    • Landings

Connections between topic areas Semantic bridges

For Vandenberg Space Launch Complex 4, one of the stronger structural bridges in this analysis connects Vandenberg Space Launch Complex 4 with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Vandenberg Space Launch Complex 4 — Overview · splits 27 ⟂ 30
Vandenberg Space Launch Complex 4 — SLC-4E · splits 45 ⟂ 12
Vandenberg Space Launch Complex 4 — LZ-4 · splits 52 ⟂ 5
Vandenberg Space Launch Complex 4 — Atlas-Agena · splits 54 ⟂ 3
Vandenberg Space Launch Complex 4 — SLC-4W · splits 54 ⟂ 3
Vandenberg Space Launch Complex 4 — Gallery · splits 54 ⟂ 3

Map overview Semantic statistics

Vandenberg Space Launch Complex 4

Nodes57
Edges56
Triples26
Avg. degree1.96
Density0.035088
Components1

Source & methodology

TTTA analyzes the structure around Vandenberg Space Launch Complex 4 to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as SLC-4E, Overview & LZ-4, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Vandenberg Space Launch Complex 4 · EN edition · Analysis: TopicsToTalkAbout

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