# Beagle 2

> British Mars lander; failed to deploy properly after landing

**Wikidata**: [Q559463](https://www.wikidata.org/wiki/Q559463)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Beagle_2)  
**Source**: https://4ort.xyz/entity/beagle-2

## Summary
Beagle 2 was a British Mars lander that failed to deploy properly after landing on Mars on December 25, 2003, as part of the European Space Agency's Mars Express mission. Despite achieving a controlled touchdown, its solar panels did not fully open, preventing communication. It was the first UK-led mission to Mars.

## Key Facts
- **Launch Date**: June 2, 2003, aboard a Soyuz-FG rocket from Baikonur Cosmodrome.
- **Landing Date**: December 25, 2003, in Isidis Planitia, Mars (02:54 UTC).
- **Mass**: 33.2 kg (main structure); 71 kg including heat shield and parachute.
- **Manufacturer**: Astrium (general contractor) and Martin-Baker (subcontractor).
- **Operator**: National Space Centre (UK).
- **Outcome**: Failed deployment of solar panels and communication arrays post-landing.
- **Named After**: HMS Beagle, the ship that carried Charles Darwin.

## FAQs
### Q: What happened to Beagle 2 after it landed on Mars?
A: Beagle 2 successfully landed but failed to deploy its solar panels and antennas, leaving it unable to communicate with Earth. The cause was attributed to a software error or mechanical issue during deployment.

### Q: Was Beagle 2 ever found?
A: Yes, NASA's Mars Reconnaissance Orbiter confirmed its location in Isidis Planitia in 2015, showing it was intact but only partially deployed.

### Q: What was Beagle 2's purpose?
A: It aimed to search for signs of past life on Mars by analyzing soil and rock samples for organic molecules and water traces.

## Why It Matters
Beagle 2 represented a major milestone as the UK's first interplanetary mission and a low-cost, innovative approach to Mars exploration. Despite its failure, the mission advanced engineering knowledge for future landers and highlighted the challenges of deploying systems autonomously on Mars. Its scientific goals, such as searching for biosignatures, influenced later missions like NASA's Perseverance rover. The public and scientific interest in Beagle 2 underscored the global fascination with Mars and the quest to understand its potential for life.

## Notable For
- First British-led mission to Mars.
- Innovative "pencil-on-a-stick" airbag landing system.
- Partial deployment failure despite successful landing, a historic "so close yet so far" outcome.
- Subject of a 12-year search before its wreckage was confirmed in 2015.

## Body

### Mission Overview
Beagle 2 launched on June 2, 2003, as part of the Mars Express orbiter mission. It separated from the orbiter on December 19, 2003, and entered Mars' atmosphere on December 25. The lander used a heat shield, parachute, and airbags to touch down in Isidis Planitia, a suspected ancient lakebed.

### Design and Specifications
- **Mass**: 33.2 kg (core lander); 71 kg including entry, descent, and landing systems.
- **Power**: Solar panels designed to generate 60–70 W.
- **Instruments**: Included cameras, spectrometers, and a rock grinder to analyze Martian soil.
- **Entry System**: Heat shield, parachute, and airbag system for landing.

### Failure and Legacy
- **Deployment Failure**: Only three of four solar panels opened, blocking antenna deployment. The lander ceased communication 1.9 seconds into its surface operations phase.
- **Discovery**: High-resolution images from NASA's Mars Reconnaissance Orbiter in 2015 confirmed Beagle 2's location and partial deployment.
- **Scientific Legacy**: The mission demonstrated the feasibility of low-cost landers and informed design improvements for subsequent Mars missions, such as ExoMars.

## References

1. [Source](http://www.spacecentre.co.uk/space-now/457-beagle-2)
2. [Source](http://www.esa.int/Science_Exploration/Space_Science/Mars_Express/Industry)
3. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
4. Jonathan's Space Report
5. [Source](https://www.esa.int/Science_Exploration/Space_Science/Mars_Express/Beagle-2_lander_found_on_Mars)
6. [Source](https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2003-022C)
7. Identification of the Beagle 2 lander on Mars
8. Freebase Data Dumps. 2013
9. [Source](https://sci.esa.int/web/mars-express/-/47364-fact-sheet)
10. [Source](https://www.beagle2.com/landing/timeline.htm)
11. [Source](https://space.skyrocket.de/doc_stage/fregat.htm)
12. [Source](https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/req/naif_ids.html)