Technology · Air and missile defense

Space-based kinetic interceptors

Interceptors hosted on satellites ('orbital magazines') that leave orbit to hit missiles, using solid rocket motors and seekers.

DevelopmentPart of Space-based missile defense

Who builds it6

Fielded0
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Limited fielding0
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Prototype0
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Development6
Research0
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Concept0
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Organizations working on this technology. Select a sortable column heading to sort.
				Notes	Conf.
Anduril IndustriesUS	Prime	Developer	Development	—	Reported
ApexUS	Startup	Developer	Development	Project Shadow, privately funded; launch slated June 2026 (outcome not confirmed in sources gathered).	Reported
Lockheed MartinUS	Prime	Developer	Development	—	Reported
Northrop GrummanUS	Prime	Developer	Development	—	Reported
True AnomalyUS	Startup	Developer	Development	—	Reported
WardstoneUS	Startup	Developer	Development	Original focus; company shifted toward surface-based interceptors in 2026.	Reported

Placed by each organization's own maturity for this technology; TRL is self-reported or estimated, see confidence.

Products2

Hailstorm

Wardstone

Wardstone's interceptor product line: first described as a space-based interceptor that releases high-speed buckshot clouds against hypersonic missiles, later as a mass-producible modular interceptor including a ground-launched variant.

Development

Project Shadow

Apex

Apex-funded demonstration in which an 'Orbital Magazine' satellite deploys two prototype interceptors on orbit; launch slated for June 2026.

Development

Inputs it depends on2

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Inputs this technology depends on. Select a sortable column heading to sort.
			Why it constrains
Solid rocket motors	Subsystem	Critical	US supply consolidated from six makers to two between 2000 and 2015 (Aerojet Rocketdyne, now L3Harris, and Orbital ATK, now Northrop Grumman). DoD calls the narrow supplier base a bottleneck and has funded new entrants (Anduril, X-Bow, Ursa Major) and sub-tier suppliers through DPA Title III, while Northrop and L3Harris expand capacity.
Launch to low Earth orbit	Infrastructure	Medium	SBIs are planned for a proliferated LEO constellation; cheap launch is cited as what made them feasible.

Criticality is how much a shortage would constrain production; open an input for producers, concentration and trade controls.

News3

Open in the news feed →

Apr 24, 2026NewsAnduril Industries, Lockheed Martin, Northrop Grumman, RTX, Space Systems Command, SpaceX, True AnomalySpace Force names 12 companies to develop Golden Dome's space-based interceptorsDefenseScoop Feb 13, 2026NewsWardstoneStartup bets on new approach to space-based missile defenseSpaceNews Oct 22, 2025CompanyApexApex Launches Project Shadow: America's First Commercially-Led, On-Orbit Space-Based Interceptor DemonstrationApex

Sources4

1
NewsSpace Force names 12 companies to develop Golden Dome's space-based interceptors
DefenseScoop · Apr 24, 2026 · Supports Organization technology, Technology · technology input:leo-launch
“The companies that received OTAs are Anduril, Booz Allen Hamilton, General Dynamics Mission Systems, GITAI USA, Lockheed Martin, Northrop Grumman, Quindar, Raytheon, Sci-Tec, SpaceX, True Anomaly and Turion Space Corp.”
2
NewsSpace Force Awards First Contracts for Golden Dome's Space-Based Interceptors
Air & Space Forces Magazine · Nov 25, 2025 · Supports Organization technology
“Northrop, meanwhile, has begun testing SBIs on the ground and is already providing operational analysis to the Pentagon.”
3
CompanyApex Launches Project Shadow: America's First Commercially-Led, On-Orbit Space-Based Interceptor Demonstration
Apex · Oct 22, 2025 · Supports Organization technology, Technology, Technology · technology input:solid-rocket-motors
“The mission is slated to fire demonstration-class space-based interceptors on orbit within the next year.”
4
CompanyWardstone: The Modular Interceptor Platform
Y Combinator · Supports Organization technology
“Wardstone builds space-based interceptors: satellites with interceptors designed to kinetically destroy missiles.”

Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.