# Pioneer 8

> NASA space probe

**Wikidata**: [Q9060015](https://www.wikidata.org/wiki/Q9060015)  
**Source**: https://4ort.xyz/entity/pioneer-8

## Summary
Pioneer 8 was a NASA space probe launched in 1967 to study interplanetary space, particularly solar wind and cosmic rays. It was part of the Pioneer 6-9 series, designed as unmanned robotic spacecraft to explore beyond Earth's orbit.

## Key Facts
- Launched on **December 13, 1967**, at **14:08:00 UTC** from **Cape Canaveral Space Launch Complex 17B**.
- Operated by **NASA** and manufactured by **TRW Inc.**.
- Mass at launch: **146 kg**, with dimensions of **0.94 m diameter** and **0.81 m height**.
- Powered by a **79-watt** nominal power output system.
- Launched using a **Delta E** expendable launch vehicle (serial **489 / D-055**).
- Lost signal on **August 22, 1996**, after nearly **29 years** of operation.
- Also known by the alias **Pioneer C**.
- Part of the **Pioneer 6, 7, 8, and 9** series of space probes.
- COSPAR ID: **1967-123A**, NSSDCA ID: **1967-123A**, NAIF ID: **-20**.

## FAQs
### Q: What was the purpose of Pioneer 8?
A: Pioneer 8 was designed to study interplanetary space, including solar wind, cosmic rays, and the solar magnetic field. It was part of NASA's effort to understand space weather and its effects on Earth.

### Q: How long did Pioneer 8 operate?
A: Pioneer 8 operated for nearly **29 years**, from its launch on **December 13, 1967**, until the loss of signal on **August 22, 1996**.

### Q: What rocket launched Pioneer 8?
A: Pioneer 8 was launched using a **Delta E** expendable launch vehicle, specifically serial number **489 / D-055**.

### Q: What were the dimensions of Pioneer 8?
A: Pioneer 8 had a **diameter of 0.94 meters** and a **height of 0.81 meters**, with a launch mass of **146 kg**.

### Q: What happened to Pioneer 8?
A: Pioneer 8 lost signal on **August 22, 1996**, after nearly three decades of operation. It remains in a heliocentric orbit.

## Why It Matters
Pioneer 8 was a critical part of NASA's early efforts to explore interplanetary space, providing valuable data on solar wind, cosmic rays, and the solar magnetic field. As one of the first space probes designed to operate beyond Earth's orbit, it helped lay the foundation for future deep-space missions. Its nearly **29-year operational lifespan** demonstrated the durability and reliability of early space probe technology, influencing the design of subsequent missions. The data collected by Pioneer 8 contributed to our understanding of space weather, which is essential for protecting satellites, astronauts, and even Earth's power grids from solar storms. Additionally, its long-term operation showcased the potential for extended missions, paving the way for modern space exploration.

## Notable For
- **Long operational lifespan**: Nearly **29 years** of continuous operation, one of the longest for a space probe of its era.
- **Part of a pioneering series**: Member of the **Pioneer 6-9** program, which were among the first spacecraft dedicated to studying interplanetary space.
- **Solar and cosmic research**: Provided critical data on **solar wind, cosmic rays, and the solar magnetic field**.
- **Durable design**: Demonstrated the reliability of early space probe technology, influencing future missions.
- **High-precision measurements**: Equipped with instruments to measure space conditions with high accuracy for its time.

## Body
### Overview
Pioneer 8 was an unmanned robotic spacecraft launched by NASA to explore interplanetary space. It was part of the **Pioneer 6-9** series, which focused on studying solar phenomena and cosmic rays. The probe was designed to operate in a heliocentric orbit, allowing it to gather data far from Earth's influence.

### Launch and Mission Details
- **Launch Date**: December 13, 1967, at **14:08:00 UTC**.
- **Launch Site**: Cape Canaveral Space Launch Complex 17B.
- **Launch Vehicle**: Delta E (serial **489 / D-055**).
- **Operator**: NASA.
- **Manufacturer**: TRW Inc.

### Technical Specifications
- **Mass**: 146 kg (launch weight).
- **Dimensions**:
  - Diameter: 0.94 meters.
  - Height: 0.81 meters.
- **Power Output**: 79 watts (nominal).
- **Identifiers**:
  - COSPAR ID: 1967-123A.
  - NSSDCA ID: 1967-123A.
  - NAIF ID: -20.

### Mission Timeline
- **1967-12-13**: Successful launch from Cape Canaveral.
- **1967-12-13 to 1996-08-22**: Operational period, collecting data on solar wind and cosmic rays.
- **1996-08-22**: Loss of signal, marking the end of the mission.

### Scientific Contributions
Pioneer 8 carried instruments to measure:
- Solar wind parameters.
- Cosmic ray intensities.
- Solar magnetic field variations.
- Interplanetary dust and plasma.

The data from Pioneer 8 helped scientists better understand space weather and its potential impacts on Earth and spacecraft.

### Legacy
Pioneer 8's long operational life and scientific contributions made it a key mission in NASA's early space exploration efforts. It demonstrated the feasibility of long-duration space probes and provided a model for future missions, including those in the Voyager and Pioneer programs.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "Pioneer 8",
  "description": "NASA space probe launched in 1967 to study interplanetary space, including solar wind and cosmic rays.",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q8449",
    "https://en.wikipedia.org/wiki/Pioneer_8"
  ],
  "additionalType": "SpaceProbe"
}

## References

1. Jonathan's Space Report
2. [Pioneer  8](https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1967-123A)
3. [Source](https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/req/naif_ids.html)