reconsidering the rules of space project
Summary
The document examines the physical constraints of space operations, arguing that while space is uniquely suited for civilian and reconnaissance missions, it is poorly suited for kinetic ground-attack and boost-phase missile defense due to high costs, reliability issues, and intrinsic vulnerabilities. It details the mechanics of various orbits (LEO, MEO, GEO, Molniya, Tundra), the propellant requirements for maneuvering, and the technical methods for interfering with satellites, including jamming, dazzling, and kinetic energy attacks. The authors conclude that being the first to deploy space-based weapons would not confer a lasting military advantage because space lacks strategic locations and satellites remain inherently vulnerable.
Key insights
- Space basing is uniquely suited for large-scale environmental and weather monitoring, astronomy, global communication, navigation, reconnaissance, and early warning of missile launches because satellites can see much larger areas of the Earth than ground or air sensors.
- Using space-based weapons to attack ground targets is inefficient and costly compared to intercontinental ballistic missiles (ICBMs), which provide similar prompt global reach with greater reliability and at a fraction of the cost.
- Space-based boost-phase missile defense is intrinsically vulnerable because an attacker can create 'holes' in the defense constellation by destroying interceptors with short-range ASATs or by overwhelming the system with simultaneous launches.
- The mass of propellant required for a satellite to change its velocity increases exponentially with the amount of velocity change, which severely limits the amount of maneuvering a satellite can perform.
- Satellites are inherently vulnerable to interference and attack because they cannot be hidden in space and their trajectories are predictable.
- Ground-based lasers can 'dazzle' high-resolution imaging satellites by swamping optical sensors with light, and at higher power levels, can cause 'partial blinding' by permanently damaging pixels on the detector.
- High-power microwave (HPM) attacks are most practical from space rather than the ground, and can disrupt or permanently damage electronics via 'front door' (antenna) or 'back door' (casing seams) coupling.
- A 'simple' non-homing ASAT that lofts a cloud of pellets into a satellite's path is likely to be ineffective due to uncertainties in satellite position, missile accuracy, and timing.
- The Global Positioning System (GPS) is robust due to its high altitude, the use of six separate orbital planes, and the ability of satellites to operate autonomously for up to 180 days.
- The Military Space Plane (MSP) is limited by the physics of orbital dynamics; it cannot maneuver like an airplane and would require prohibitive amounts of propellant to deploy satellites into different orbital planes.
- First-mover advantage does not exist in space because there are no strategic locations to occupy, and no technology allows a country to prevent others from deploying space weapons or to reliably protect its own satellites.
Cite the original document
- APA
- Wright, D., Grego, L., & Gronlund, L. (2005). reconsidering the rules of space project. Union of Concerned Scientists. https://www.ucs.org/sites/default/files/2019-09/physics-space-security.pdf
- Chicago
- Wright, David, Laura Grego, and Lisbeth Gronlund. reconsidering the rules of space project. Union of Concerned Scientists, 2005. https://www.ucs.org/sites/default/files/2019-09/physics-space-security.pdf.
- Wikipedia
- {{cite report |last1=Wright |first1=David |last2=Grego |first2=Laura |last3=Gronlund |first3=Lisbeth |title=reconsidering the rules of space project |publisher=Union of Concerned Scientists |date=2005 |url=https://www.ucs.org/sites/default/files/2019-09/physics-space-security.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}
- BibTeX
- @techreport{wright2005reconsidering, author = {Wright, David and Grego, Laura and Gronlund, Lisbeth}, title = {{reconsidering the rules of space project}}, institution = {Union of Concerned Scientists}, year = {2005}, url = {https://www.ucs.org/sites/default/files/2019-09/physics-space-security.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }
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