6-minute read | 900 words
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Preparing space for Q-day.
Host Maria Varmazis and Eddy Zervigon, CEO of Quantum XChange discuss how quantum computing is going to impact the space industry. Unlike with previous technologies and advancements, the space industry is taking a more proactive approach to quantum computing as stakeholders invest in and manage rapidly-accelerating cyber and operational risks.
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Space after quantum.
This week on T-Minus: Space-Cyber Briefing: we look at how the space sector is preparing itself for quantum computing. While practical quantum computing has long seemed just over the horizon, governments and commercial space operators alike are now actively preparing for the day when quantum computing becomes capable of breaking widely used public-key cryptography.
Does this newsletter spark questions for you? Write to us at space@n2k.com to guide how we’ll continue to explore the role of quantum computing in space in future podcast episodes and newsletter issues.
The quantum impact.
For decades, quantum computing has largely been viewed as an emerging technology that remained years away from practical deployment. Today, rapid advances in hardware, software, and investments have shifted this conversation from whether quantum computing will reshape the industry to how quickly organizations need to start preparing for quantum’s arrival.
Space systems face a unique challenge because many satellites are designed to operate for decades after launch, often with limited opportunities to update their onboard software or hardware. Unlike terrestrial infrastructure, replacing vulnerable cryptography on orbit can be difficult, or in some cases, impossible.
If quantum-capable adversaries are able to compromise the cryptographic systems that protect satellite communications, they could potentially intercept sensitive communications, spoof commands, manipulate telemetry, or inject malicious software updates into trusted systems. This concern is amplified by “harvest now, decrypt later” attacks, where adversaries collect encrypted communications today with the expectation that future quantum computers will likely decrypt them in a few years.
Perhaps more concerning is quantum computing’s potential role in gray-zone operations. Rather than destroying satellites, adversaries could quietly undermine trust in space infrastructure by compromising encrypted communications or other malicious activities all the while remaining below the threshold of detection or clear attribution.
Given these challenges, waiting for quantum to become fully actualized is not a solution for the space sector. Rather, governments and private enterprises alike need to focus and invest in solutions now.
One example of investing in a quantum-ready future is prioritizing crypto agility. Crypto agility refers to a system’s ability to replace and adapt cryptographic algorithms without disrupting ongoing operations. For satellites, this means designing spacecraft, ground systems, and communications networks that can adopt new cryptographic standards as threats evolve rather than remaining tied to the encryption selected years before launch.
A post Q-day space sector.
The common misconception is that quantum computing will suddenly render every satellite insecure overnight. In reality, the transition to a post-quantum space ecosystem will be gradual. The greater challenge is not a single quantum computing breakthrough, but rather ensuring that satellites launched today remain secure through the coming decades.
Governments are already laying the foundation for that transition. In 2024, the National Institute of Standards and Technology (NIST) published its first three finalized post-quantum cryptographic standards, giving public and private organizations a common set of algorithms for future deployments. Meanwhile, the National Security Agency (NSA) directed national security systems toward its Commercial National Security Algorithm Suites 2.0, establishing a roadmap for migrating sensitive government systems to quantum-resistant cryptography.
For the space industry, these efforts represent only the beginning of the space sector’s transition to the post-quantum era. Adopting post-quantum algorithms is not as simple as installing a software update.
- Satellite manufacturers must evaluate processing power, bandwidth, memory constraints, and mission lifecycles to ensure new cryptographic methods can operate reliably in orbit.
- Ground stations, launch providers, software vendors, and satellite operators will also need to coordinate migrations so that every component of the space ecosystem can remain interoperable for years to come.
Preparing the space sector for the post-quantum era will require far more than adopting new algorithms. Preparation will demand long-term planning, crypto agility, effective private-public coordination, and significant funding. While Q-day may still be a few years away, many of the spacecraft launching today could still be operating when it arrives, making quantum readiness a challenge that needs to be addressed well before quantum becomes commercially available.
This week’s space-cyber headlines.
The news stories we’re reading and thinking about this week.
Space Force adds Relativity, Impulse Space to national security launch program.
- The US Space Force has added two companies, Relativity Space and Impulse Space, to its roster of commercial providers to compete for national security launch contracts.
- With this contractor expansion, Relativity Space and Impulse Space have now been added to the military’s Indefinite Quantity pool, where the Space Force can solicit bids for future missions as they arise.
- Listen to Ethan’s coverage of this story on the CyberWire Daily.
July 8, 2026 | Source: Space News
Exolaunch successfully deploys 49 satellites on Transporter-17 mission.
- Exolaunch has deployed 49 customer satellites after the Transporter-17 rideshare mission was successfully completed.
- With this mission, Exolaunch’s satellites will be used for commercial, government, research, and defense payloads across the globe.
- EQT, a private equity firm, acquired Exolaunch in a deal roughly valued at $339 million and is expected to close in Q4 2026.
July 7, 2026 | Source: Exolaunch