# Planetary Sensing
**Domain:** Environmental Monitoring / Data Systems
**Doc Type:** Canonical Activity Node
**Maturity:** Developed
## Definition
**Planetary sensing** is the systematic observation of environmental and human-built systems at world scale through satellites, radar, ground stations, ocean instruments, distributed sensors and related data networks.
The concept names the activity of observing. [[wiki/Planetary Sensing Grid|Planetary Sensing Grid]] names the organized physical and institutional infrastructure. [[wiki/Planetary Sensorium|Planetary Sensorium]] is broader, including social, economic, administrative and technical perception used by institutions or machine-intelligence systems.
## Climate Context
Planetary sensing provides the observational basis for weather prediction, climate science, disaster warning, agriculture, water management, energy planning and ecological assessment. [[wiki/Climate Data Infrastructure|Climate Data Infrastructure]] stores, processes and distributes these observations.
## Governance Context
Observation creates steering capacity. It becomes consequential when [[wiki/Data Assimilation|Data Assimilation]] and [[wiki/Predictive Modeling|Predictive Modeling]] connect observations to allocation or intervention.
Sensing is not automatically surveillance and does not automatically produce justice. [[wiki/Objective Function|Objective Function]], access, ontology, institutional duty and the rights of affected communities determine what follows.
## Key Insight
**Planetary sensing allows civilization to perceive coupled systems; governance determines whether that perception becomes warning, repair, extraction or control.**
## See Also
[[wiki/Satellite Networks|Satellite Networks]], [[wiki/Sensor Networks|Sensor Networks]], [[wiki/Climate Modeling|Climate Modeling]], [[wiki/Systems Intelligence|Systems Intelligence]], [[wiki/Planetary Administrative Intelligence|Planetary Administrative Intelligence]]