Image: L3Harris Technologies
By Steve Trimble,
Published by Aviation Week, 29 April 2026
Space-based interceptors are no longer an intrinsic component of the Golden Dome program. A proliferated constellation of orbital, rocket-fired missiles is still being considered, but they are unnecessary if the defense industry is not ready to deliver them for an affordable price.
U.S. Space Force Gen. Michael Guetlein, who is in charge of the $185 billion Golden Dome program, now refers conditionally to the prospect of fielding a space-based layer of interceptors, which would be aimed at shooting down missiles during their vulnerable boost phase.
“If boost-phase [intercept] from space is not affordable and scalable, we will not produce it because we have other options to get after it,” Guetlein told lawmakers during an April 15 House Armed Services Subcommittee on Strategic Forces hearing. That remark reflects a change in tone.
When President Donald Trump signed the executive order that launched the Golden Dome program a week after taking office in January 2025, the document emphasized that space-based interceptors “shall” be included in the architecture. The executive order extended interest in an orbital defensive system into Trump’s second term of office. During the first term, the 2019 Missile Defense Review directed the Space Development Agency to study options for fielding a constellation of space-based interceptors.
To be sure, space-based interceptors are still under consideration. The Space Force Space Combat Power Program Executive Office identified 12 companies on April 24 that were selected to compete for contracts worth up to $3.2 billion on space interceptors. Those include traditional defense and space contractors—Booz Allen Hamilton, General Dynamics, Lockheed Martin, Northrop Grumman, Raytheon and SpaceX—as well as several nontraditional suppliers, including Anduril, Gitai USA, Quindar, SciTec, True Anomaly and Turion Space.
In the near term, budget documents show that they will be working on enabling technologies, not the space-based interceptors themselves. The $1.39 billion requested by the Pentagon for “space-based interceptors” in the fiscal 2027 budget would be spent on the Space Data Network – Space Link. “This funding will support the adoption of a commercially derived radio-frequency payload and prototypes for integration onto multiple planes of space vehicles,” state Space Force budget justification documents released on April 27.
But the government’s program manager is not convinced they are ready to deliver. “What we do not know today is, ‘Can I do it at scale, and can I do it affordably?’ That’s going to be the huge challenge for boost-phase intercept,” Guetlein told lawmakers.
That approach appears to acknowledge concerns about the affordability of a space-based interceptor layer. Many external analysts expect the technology would work. But the costs of scaling up a constellation to be effective could be enormous.
Todd Harrison, a senior fellow at the American Enterprise Institute, has explained the problem. A constellation of space-based interceptors would be parked in low Earth orbit, so they would always be moving around the planet. But the incoming missiles would be launched from only a handful of locations inside an adversary’s territory or perhaps out at sea. The problem is that only a small number of interceptors would be within range at any given moment of the most likely launch sites.
What has not changed is the sprawling ambition of the Golden Dome program. Testifying before the Senate Armed Services Committee on April 27, Marc Berkowitz, assistant secretary of defense for space policy, reaffirmed that the architecture is not limited to defending a select number of population centers, military sites and critical infrastructure. The goal is to defend the entire homeland from all air and missile threats, ranging from one-way attack drones to fractional orbital bombardment systems. “The Golden Dome will protect our homeland, citizens, critical infrastructure and second strike capability,” Berkowitz said.
Other technologies, such as strategic-level directed energy weapons, might need to be developed to make that vision a reality.
“We have built the foundation of Golden Dome upon a scalable, modular architecture using affordable elements and taking advantage of competition innovation from industry to deliver those elements, and we have scaled it so that is multilayered and integrated,” Guetlein said at the April 27 hearing. “If any component of the architecture cannot deliver on time, we have pathways to pivot away from that and embrace a different technology.”
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