# Progress M-21

> Russian uncrewed cargo spacecraft

**Wikidata**: [Q10639665](https://www.wikidata.org/wiki/Q10639665)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Progress_M-21)  
**Source**: https://4ort.xyz/entity/progress-m-21

## Summary
Progress M-21 is a Russian uncrewed cargo spacecraft launched on January 28, 1994, from Gagarin's Start using a Soyuz-U rocket. It belongs to the Progress-M class, which is specifically designed for resupplying space stations with cargo and essential supplies.

## Key Facts
- Progress M-21 is an instance of the Progress-M class of spacecraft used for resupplying space stations
- It was launched on January 28, 1994
- The spacecraft was launched from Gagarin's Start
- It was launched using a Soyuz-U rocket
- Its COSPAR ID is 1994-005A
- Its SCN (Satellite Catalog Number) is 22975
- It has 2 sitelinks on Wikipedia
- It has entries in English and Swedish Wikipedia

## FAQs
### Q: What is Progress M-21?
A: Progress M-21 is a Russian uncrewed cargo spacecraft that was launched on January 28, 1994. It belongs to the Progress-M class, which is specifically designed for resupplying space stations.

### Q: When and where was Progress M-21 launched?
A: Progress M-21 was launched on January 28, 1994, from Gagarin's Start using a Soyuz-U rocket as the launch vehicle.

### Q: What is the purpose of Progress M-21?
A: Progress M-21 is part of the Progress-M class of spacecraft, which is used to resupply space stations with cargo, fuel, and other supplies needed for space missions.

### Q: What is the technical classification of Progress M-21?
A: Progress M-21 is classified as a Russian uncrewed cargo spacecraft and is an instance of the Progress-M class.

### Q: How can Progress M-21 be identified in satellite catalogs?
A: Progress M-21 can be identified by its COSPAR ID (1994-005A) and its SCN (Satellite Catalog Number) 22975.

## Why It Matters
Progress M-21 represents a critical component of Russia's space logistics infrastructure, enabling the sustained operation of space stations through regular cargo deliveries. As part of the Progress-M series, it exemplifies the long-running Russian capability to maintain human presence in space by delivering essential supplies, fuel, and equipment. These uncrewed cargo missions have been fundamental to the success of space station operations, including both the Soviet/Russian Mir station and later the International Space Station. The reliability and frequency of Progress missions have made them a backbone of space station logistics, demonstrating the importance of robust resupply capabilities for long-duration space missions.

## Notable For
- Being part of the Progress-M class, a specialized spacecraft series for space station resupply
- Launching on January 28, 1994, during a period of continued Russian space operations after the Soviet era
- Using the Soyuz-U rocket, a proven launch vehicle variant from the Soviet Union
- Having a specific COSPAR ID (1994-005A) and SCN (22975) for tracking and identification
- Representing the continuation of Russia's cargo spacecraft program following the dissolution of the Soviet Union

## Body
### Basic Information
Progress M-21 is a Russian uncrewed cargo spacecraft that was launched on January 28, 1994. It belongs to the Progress-M class, which is specifically designed for resupplying space stations with cargo, fuel, and other essential supplies.

### Launch Details
- Launch date: January 28, 1994
- Launch location: Gagarin's Start
- Launch vehicle: Soyuz-U (a Soviet rocket design variant - Universal)
- COSPAR ID: 1994-005A
- SCN (Satellite Catalog Number): 22975

### Classification and Identification
- Instance of: Progress-M
- Country of origin: Russia (inheriting from the Soviet Union's space program)
- Wikipedia title: Progress M-21
- Available in Wikipedia languages: English, Swedish
- Sitelink count: 2
- Google Knowledge Graph ID: /g/11dylmh0b
- Wolfram Language entity code: Entity["Satellite", "22975"]

### Related Entities
- Progress-M [class] — spacecraft which is used to resupply space stations
- Soyuz-U [class] — Soyuz rocket design variant - Universal (originally from the Soviet Union)

### Significance
Progress M-21 represents a continuation of Russia's cargo spacecraft program following the dissolution of the Soviet Union. As part of the Progress-M series, it contributes to the logistical support of space stations, ensuring the delivery of necessary supplies for maintaining human presence in space. The Soyuz-U launch vehicle used for this mission has been a workhorse of the Russian space program, demonstrating reliability and consistency in launching cargo missions to support space station operations.

## References

1. Jonathan's Space Report