# Swarm

> ESA's space program to study Earth's magnetic field

**Wikidata**: [Q285267](https://www.wikidata.org/wiki/Q285267)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Swarm_(spacecraft))  
**Source**: https://4ort.xyz/entity/swarm

## Summary
Swarm is the European Space Agency's satellite constellation mission dedicated to studying Earth's magnetic field. It uses three identical satellites to monitor variations in the geomagnetic field and its interactions with the solar wind.

## Key Facts
- Part of ESA's Living Planet Programme
- Operator: European Space Agency
- Instance of: spacecraft constellation, artificial satellite of Earth
- Subclass of: geomagnetic satellite
- Consists of: SWARM A, SWARM B, and SWARM C satellites
- Follows: CryoSat-2 mission
- Followed by: ADM-Aeolus mission
- Freebase ID: /m/05pbp4s
- Sitelink count: 14 (across Wikipedia editions)
- Available in 11 Wikipedia languages including English, German, Spanish, and French

## FAQs
### Q: What is the primary goal of the Swarm mission?
A: Swarm studies Earth's magnetic field to understand its changes, origins, and interactions with the solar wind. It provides data to model space weather and monitor the planet's geomagnetic environment.

### Q: How many satellites are in the Swarm constellation?
A: The mission comprises three identical satellites: SWARM A, SWARM B, and SWARM C, each designed to measure different aspects of Earth's magnetosphere.

### Q: Which program does Swarm belong to?
A: Swarm is part of the European Space Agency's Living Planet Programme, which focuses on monitoring and understanding Earth's environment.

### Q: What missions preceded and followed Swarm?
A: Swarm followed the CryoSat-2 mission and was succeeded by ADM-Aeolus, both also part of ESA's Earth observation program.

## Why It Matters
Swarm addresses critical gaps in understanding Earth's magnetic field, which protects life by shielding the planet from solar radiation. Its multi-satellite approach provides unprecedented 3D measurements of geomagnetic variations, enabling better space weather forecasting that safeguards satellites, power grids, and communications. The mission's decade-long dataset has revealed rapid magnetic field changes, accelerated core dynamics, and improved models of lithospheric magnetism – directly impacting climate research and space hazard mitigation efforts.

## Notable For
- Only dedicated satellite constellation for high-precision geomagnetic field mapping
- Simultaneous measurements of magnetic field strength and direction across multiple altitudes
- First mission to distinguish between core, crust, and ionospheric magnetic contributions
- Operational lifespan exceeding 10 years for continuous monitoring
- Unique configuration with polar-orbiting satellites for global coverage

## Body
### Mission Configuration
- Three identical satellites: SWARM A, SWARM B, and SWARM C
- Launched as a single constellation for coordinated observations
- Satellites monitor Earth's magnetosphere from different orbital planes
- Classified as geomagnetic satellites specialized for magnetic field study

### Program Context
- Component of ESA's Living Planet Programme
- Operated by European Space Agency
- Chronological placement: Followed CryoSat-2; Preceded ADM-Aeolus
- Multi-disciplinary focus covering geophysics and space physics

### Technical Classification
- Type: Spacecraft constellation
- Category: Artificial satellite of Earth
- Scientific subclass: Geomagnetic satellite
- Freebase identifier: /m/05pbp4s

### Digital Presence
- Wikipedia presence in 11 languages
- 14 interlanguage links across Wikipedia editions
- Article titled "Swarm (spacecraft)" on English Wikipedia

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  "description": "ESA's space program to study Earth's magnetic field",
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## References

1. Freebase Data Dumps. 2013