SPACE ACCESSIBILITY INDEX

Methodology â†’

60.9

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Space Accessibility Index

Actual: 60.9

Projection: 60.8 (includes analyst estimates)

Tier: Mature

Momentum: ↑ (+4.3 YoY)

Sector sub-indices (all 13)

Sector	Actual	Projection	Confidence
Launch & Reusable Rockets	66.7	66.7
Satellite Broadband & Direct-to-Cell	54.8	54.8
Earth Observation & Geospatial Intelligence	56.1	56.1
In-Space Servicing, Assembly & Manufacturing (ISAM)	53.7	53.7
Pharmaceutical Manufacturing in Microgravity	48.9	48.9	medium
Commercial Space Stations & Tourism	49.4	49.4
Hypersonic Flight Testing-as-a-Service	54.6	54.6
ZBLAN Optical Fiber	Insufficient data	64.7	low
Space-Manufactured Semiconductors & Advanced Alloys	Insufficient data	64.7
Bioprinting & Tissue Engineering	Insufficient data	22.7	medium
Orbital Data Centers	65.6	26.5	low
Space-Based Solar Power	53.9	35.6	low
Asteroid & Lunar Resource Extraction	57.8	57.8
Satellite Manufacturing	Insufficient data	--

Top factor movers

spacecraft_deployed: +60.6% YoY
commercial_crew_missions: +33.3% YoY
annual_launches: +24.0% YoY

MASS TO ORBIT

metric tons/year

SPACE ECONOMY

USD billions

COST TO LEO

USD/kg

PRIVATE INVESTMENT

USD billions

GOV SPACE BUDGETS

USD billions

COMMERCIAL GRANTS

USD billions

COMPOSITE SAI — ACTUAL vs. PROJECTION

The Actual composite is computed bottom-up from source-backed sector sub-indices. The Projection composite fills thin-data sectors with analyst-authored estimates (Torak). The gap between them is itself the signal — it tells you which parts of the space economy we can measure today vs. which are still analyst-inferred.

ACTUAL

Source-backed factor data only.

PROJECTION

Includes analyst estimates — fills data gaps for thin-coverage sectors.

SECTOR SUB-INDICES (13)

Each of the 13 first-class space sectors gets its own sub-index in both tracks. Sectors flagged "Insufficient data" in Actual are the ones the Projection column fills in — and the coverage gap bar shows the size of that fill.

SORT

SAI COMPOSITE TREND (2010–PRESENT)

CONTRIBUTING FACTORS — ALL 17, RANKED BY WEIGHT

SUPPLY CHAIN TIER BREAKDOWN

SCENARIO MODELING

Adjust factor scores to model what-if scenarios. Each slider represents a factor's normalized score (0–100). Use presets or drag individual sliders.

FACTOR RELATIONSHIPS

How SAI factors move relative to each other, based on 16 years of historical data. Understanding these relationships reveals which parts of the space economy are structurally linked and which move independently.

K_ACCESS — KARDASHEV COMPANION

Methodology →

K_access · T12M

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A single-factor, judgment-free physical derivative published alongside SAI as a check on SAI's weighted judgment. K_access = log₁₀(M) / 9, where M is trailing-12-month payload mass delivered to orbit in kg.

Anchors: M = 1 kg/yr → K = 0.00 (pre-spaceflight floor). M = 10⁹ kg/yr (1 Mt — interplanetary logistics threshold) → K = 1.00.

Historical series 1957–present 

Bars colored by method flag: mixed/measured · estimated · insufficient. Per-mission measured mass dual-sourcing is on the v1.1 roadmap.

TRANSPARENCY

Full methodology →

SAI is a weighted composite of 17 sub-metrics grouped across three presentational axes — Outward Capacity (Kardashev), Inward Sophistication (Barrow), and Economic Depth (finance). Every datapoint carries a confidence tag (reported / derived / estimated). Methodology version v1.0 — see the full methodology page for the lineage, the §3 axis table, and the K_access companion stat.