# Student Nitric Oxide Explorer

> NASA atmospheric research satellite

**Wikidata**: [Q577550](https://www.wikidata.org/wiki/Q577550)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Student_Nitric_Oxide_Explorer)  
**Source**: https://4ort.xyz/entity/student-nitric-oxide-explorer

## Summary
The Student Nitric Oxide Explorer (SNOE) was a NASA atmospheric research satellite designed to study nitric oxide (NO) in Earth's atmosphere. Launched in 1998, it was part of NASA's Explorers Program and operated until its atmospheric re-entry in 2003.

## Key Facts
- **Class**: Earth observation satellite
- **Launch date**: February 26, 1998
- **Launch vehicle**: Pegasus rocket, air-launched from the Stargazer aircraft
- **Operator**: Laboratory for Atmospheric and Space Physics
- **Mission duration**: Operated until December 13, 2003, when it re-entered Earth's atmosphere
- **Preceded by**: Advanced Composition Explorer (ACE)
- **Followed by**: Transition Region And Coronal Explorer (TRACE)
- **Part of**: NASA's Explorers Program (mission number 72)
- **Aliases**: SNOE, Explorer 72, STEDI-1
- **Official website**: [http://lasp.colorado.edu/snoe/](http://lasp.colorado.edu/snoe/)

## FAQs
### Q: What was the primary purpose of the Student Nitric Oxide Explorer?
A: SNOE was designed to study nitric oxide (NO) in Earth's atmosphere, particularly its role in ozone depletion and atmospheric chemistry.

### Q: How was the Student Nitric Oxide Explorer launched?
A: It was launched on February 26, 1998, using a Pegasus rocket, which was air-launched from the Stargazer aircraft.

### Q: When did the Student Nitric Oxide Explorer mission end?
A: The mission concluded on December 13, 2003, when the satellite re-entered Earth's atmosphere.

### Q: Who operated the Student Nitric Oxide Explorer?
A: The satellite was operated by the Laboratory for Atmospheric and Space Physics (LASP).

### Q: What was the relationship between SNOE and other NASA missions?
A: SNOE followed the Advanced Composition Explorer (ACE) and preceded the Transition Region And Coronal Explorer (TRACE) within NASA's Explorers Program.

## Why It Matters
The Student Nitric Oxide Explorer played a crucial role in advancing our understanding of Earth's atmospheric chemistry, particularly the behavior of nitric oxide (NO) and its impact on ozone depletion. By studying NO in the mesosphere and lower thermosphere, SNOE provided valuable data on atmospheric dynamics and the interactions between different atmospheric layers. Its findings contributed to broader research on climate science and space weather, helping scientists refine models of Earth's atmosphere. The mission also demonstrated the effectiveness of small, cost-effective satellites in conducting significant scientific research, paving the way for future atmospheric studies.

## Notable For
- **First dedicated mission** to study nitric oxide (NO) in Earth's atmosphere.
- **Air-launched deployment** using the Pegasus rocket, a unique method for satellite launches.
- **Contributed to ozone depletion research** by analyzing NO's role in atmospheric chemistry.
- **Operated by LASP**, a leading institution in atmospheric and space physics research.
- **Part of NASA's Explorers Program**, a series of smaller, focused scientific missions.

## Body
### Mission Overview
The Student Nitric Oxide Explorer (SNOE) was a NASA Earth observation satellite launched on February 26, 1998, to study nitric oxide (NO) in the upper atmosphere. It was part of NASA's Explorers Program, mission number 72, and operated until its atmospheric re-entry on December 13, 2003.

### Launch and Deployment
SNOE was launched using a Pegasus rocket, which was air-launched from the Stargazer aircraft. This method allowed for a more cost-effective and flexible launch compared to traditional ground-based launches.

### Scientific Objectives
The primary goal of SNOE was to investigate the distribution and variability of nitric oxide (NO) in the mesosphere and lower thermosphere. NO plays a significant role in ozone depletion and atmospheric chemistry, making its study crucial for understanding climate and space weather.

### Mission Duration and Legacy
SNOE operated successfully for several years, providing valuable data on atmospheric dynamics and chemical interactions. Its findings contributed to broader research in atmospheric science and climate modeling. The mission concluded with its re-entry into Earth's atmosphere in 2003, marking the end of its scientific operations.

### Relationship to Other Missions
SNOE followed the Advanced Composition Explorer (ACE) and preceded the Transition Region And Coronal Explorer (TRACE) within NASA's Explorers Program. These missions collectively advanced our understanding of Earth's atmosphere and the Sun's influence on it.

## Schema Markup
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## References

1. Jonathan's Space Report