Starshield is a business unit ofSpaceX creating purpose-builtlow-Earth-orbit (LEO) satellites designed to provide new military space capabilities to U.S. and allied governments.^[1][2][3][4] Starshield was adapted from the global communications networkStarlink but brings additional capabilities such as target tracking, optical and radioreconnaissance, and early missile warning.^[5][6][7][8] Primary customers include theSpace Development Agency (SDA),National Reconnaissance Office and theUnited States Space Force.^[5][9][10] As of 2025, at least 183 Starshield satellites have been launched, with the latest batch of 22 satellites being launched in April 2025 as part ofNROL-145.

While SpaceX president and COOGwynne Shotwell has indicated that there is little information she is allowed to disclose about Starshield, she has noted "very good collaboration" between the intelligence community and SpaceX on the program.^[1] The U.S.Congressional Research Service reports that future satellites in Starshield's participating SDA program may wield interceptor missiles,hypersonic projectiles, ordirected energy weapons,^[8] with the program's founder^[6] adding "sinceReagan’s day, technology has advanced enough that putting both sensors and shooters in space is not only possible but relatively easy."^[7] According to SDA directorDerek Tournear, later satellites will take on the “extremely difficult” task of maintaining contact with missiles in flight.^[11]

The former four-star generalTerrence O'Shaughnessy, who previously ranU.S. Northern Command, is the vice president for SpaceX's Special Programs Group who is thought to be involved with Starshield.^[1]The Wall Street Journal reported that Starshield's online job postings required people with top-secret clearances, as well as experience working with the Defense Department and intelligence community — such as representing Starshield to Pentagon combatant commands.^[1] For weapons manufacturing, eight senior Starshield leaders formed an additional companyCastelion, to develop mass produced hypersonic strike weapons, potentially for use as space-based interceptors^[12][13]

The first satellites were designed for the SDA and outfitted with advanced infrared sensors meant to detect and track ballistic and hypersonic missiles.^[5] In 2021, Starshield had entered a $1.8 billion classified contract with the U.S. government, revealed in 2023,^[1] to construct hundreds of spy satellites for continuous real-time monitoring of targets around the globe.^[9] These began operations from May 2024, starting with NROL-146. These satellites are made in cooperation withNorthrop Grumman.^[14]

The Starshield name was publicly announced December 2022,^[15] however in 2021, Starshield had already entered a $1.8 billion classified contract with the U.S. government, revealed in 2023.^[1] In the documents of the contract, SpaceX says that funds from the contract were expected to become an important part of the revenue mix of the company after 2021.^[1] Reuters revealed in 2024 that this contract was between theNational Reconnaissance Office and SpaceX, and for a spy satellite network consisting of hundreds of satellites functioning as a swarm.^[9] The satellites will have imaging capabilities, and the satellite network will enable the US government to have continuous surveillance of nearly anywhere around the globe.^[9] Starshield also plans to be more resilient to attack from other powers.^[9] Starshield's imaging capabilities are designed to have superior resolution over most existing U.S. government spying systems.Northrop Grumman was selected to partner with SpaceX, with insiders noting that "it is in the government's interest to not be totally invested in one company run by one person".^[16]

As early as 2020, SpaceX was designing, building, and launching customized satellites based on variants of the Starlinksatellite bus for theNational Reconnaissance Office (NRO).

In October 2020, SDA awarded SpaceX an initial $150 milliondual-use contract to develop 4 satellites to detect and track ballistic and hypersonic missiles.^[5] The first batch of satellites were originally scheduled to launch September 2022 to form part of the Tracking Layer Tranche 0 of the Space Force'sNational Defense Space Architecture.^[17] The launch was rescheduled multiple times but it eventually launched in April 2023.^[18][19]

In 2020, SpaceX hired retired four-star generalTerrence J. O'Shaughnessy who according to some sources is associated with Starlink's military satellite development and according to one source is listed as a "chief operating officer" at SpaceX.^[20][21] While still in active duty, O'Shaughnessy advocated before theUnited States Senate Committee on Armed Services for a layered capability with lethal follow-on that incorporatesmachine learning andartificial intelligence to gather and act upon sensor data quickly.^[22] As of 2024, Terrence O’Shaughnessy reportedly has had a high-level role at Starshield,^[1] with SpaceX reportedly vying for contracts for theGolden Dome space weapons system.^[23]

SpaceX was not awarded a contract for the larger Tranche 1, with awards going to York Space Systems, Lockheed Martin Space, and Northrop Grumman Space Systems.^[24]

AsStarlink was being relied on in the Russo-Ukrainian war, expert on battlefield communications Thomas Wellington argued that Starlink signals, because they use narrow focused beams, are less vulnerable to interference and jamming by the enemy in wartime than satellites flying in higher orbits.^[25] Although there is no lethal weapons being developed this technology is being used by the military and it "can be integrated onto partner satellites to enable incorporation into the Starshield network."^[26] Therefore, if the military needed the use of SpaceX satellites through the Starshield program SpaceX "currently has over 3,000 satellites in low Earth orbit that beam the signal back to users' receiver dishes."^[27]

Another Starshield contract was announced in September 2023, involving communications-focused services for U.S.Space Systems Command.^[28][29] This contract with the US Space Force plans to provide customized satellite communications for the military.^[30] This is under the Space Force's new "Proliferated Low Earth Orbit" program for LEO satellites, where Space Force will allocate up to $900 million worth of contracts over the next 10 years. Although 16 vendors are competing for awards, the SpaceX contract is the only one to have been issued to date.^[28][30] The one-year Starshield contract was awarded on September 1, 2023.^[10] The contract is expected to support 54 mission partners across the Army, Navy, Air Force, and Coast Guard.^[10]

In February 2024, theUnited States House Select Committee on Strategic Competition between the United States and the Chinese Communist Party sent a letter to Elon Musk stating that the Starshield program was potentially inbreach of contract for not providing access to U.S. troops stationed in Taiwan when "global access" was "possibly" required by the contract.^[31][32] SpaceX responded that they were in full compliance with their U.S. government contracts. SpaceX had notified the Select Committee a week earlier that they were misinformed, but the Select Committee "chose to contact media before seeking additional information [regarding Starshield military use in Taiwan]".^[33]

In the context of military communication satellites, Col. Eric Felt, director of space architecture at the office of the assistant secretary of the Air Force for space acquisition and integration, said that there are plans to acquire at least 100 Starshield-branded satellites for this purpose by 2029. He said that while the military is an active user of SpaceX's commercial Starlink service, they also want to take advantage of the company's dedicated Starshield product line. Clare Hopper, head of the Space Force’s Commercial Satellite Communications Office (CSCO) stated that demand for Starlink's commercial service is "off the charts" and that currently all of their supported users are still using the commercial Starlink satellite constellation, but that the DoD has "unique service plans that contain privileged capabilities and features that are not available commercially".^[34]

NPR reported in October 2025 that the Starshield network had begun sending unknown communications from the satellite constellation to targets on Earth in adownlink, transmitting data from space to land.^[35] The involved spectrum and signal range involved are normally reserved by international standards foruplinks, or sending data from land to space, violatingInternational Telecommunication Union standards and risking harm to other satellites and their communications.^[35] The ongoing incident involving the classified American satellite constellation was discovered by a hobbyist astronomer inBritish Columbia.^[35] The unknown signals are all reported to be in the 2025-2110 MHz range.^[35]

Between 2020 and March 2024, a dozen Starshield prototypes and operational satellites were launched on Falcon 9.^[9]Reuters reported that these satellites have never been acknowledged by SpaceX or the US government and remain classified.^[9]

Images were posted online^[36] of the two SpaceX-built Space Development Agency Tranche 0 Flight 1 Tracking Layerinfrared imaging satellites that launched on 2 April 2023.^[37] After the launch ofStarlink Group 7-16, only 20 of a batch of 22 starlink satellites were catalogued, and the remaining two were later designated as USA-350 and USA-351.^[38]

• Defense Satellite Communications System
• Militarisation of space
• Rocket Cargo, other U.S. Space Force program involving SpaceX
• Starlink in the Russo-Ukrainian War

• SpaceX satellites
• Space technology
• Communications satellite constellations
• Communications satellites in low Earth orbit
• Communications satellites of the United States
• High throughput satellites
• Wireless networking
• Military space program of the United States
• Military satellites of the United States
• SpaceX military contracts
• Reconnaissance satellites of the United States
• National Reconnaissance Office

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• Articles with excerpts