# Ranger 4

> US unmanned spaceprobe

**Wikidata**: [Q923962](https://www.wikidata.org/wiki/Q923962)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ranger_4)  
**Source**: https://4ort.xyz/entity/ranger-4

## Summary
Ranger 4 was a US unmanned space probe, part of the Ranger program, launched on April 23, 1962. It was designed to explore further into outer space, following Ranger 3 and preceding Ranger 5. The probe was manufactured by the Jet Propulsion Laboratory and launched using an Atlas-Agena B expendable launch system.

## Key Facts
*   Ranger 4 was a US unmanned space probe.
*   It was launched on April 23, 1962.
*   The launch vehicle used was an Atlas-Agena B.
*   Ranger 4 was manufactured by the Jet Propulsion Laboratory.
*   It was part of the Ranger program.
*   The probe's launch site was Cape Canaveral Launch Complex 12.
*   Ranger 4's atmospheric entry occurred on April 26, 1962.
*   Its COSPAR ID and NSSDCA ID are 1962-012A.

## FAQs
### Q: What was Ranger 4?
A: Ranger 4 was a US unmanned space probe, a robotic spacecraft designed to explore further into outer space. It was part of the broader Ranger program.

### Q: When was Ranger 4 launched?
A: Ranger 4 was launched on April 23, 1962. Its launch vehicle was an Atlas-Agena B, and it lifted off from Cape Canaveral Launch Complex 12.

### Q: Who manufactured Ranger 4?
A: Ranger 4 was manufactured by the Jet Propulsion Laboratory. It was one of several probes developed for the Ranger program.

### Q: What happened to Ranger 4?
A: After its launch on April 23, 1962, Ranger 4 experienced atmospheric entry on April 26, 1962.

## Why It Matters
Ranger 4 represents an early effort by the United States in the exploration of outer space through unmanned robotic spacecraft. As a component of the Ranger program, it was part of a series of missions aimed at advancing space exploration capabilities. Its launch and subsequent atmospheric entry contribute to the historical record of early spaceflight, providing data points in the development of space probe technology and mission execution. The existence of Ranger 4, following Ranger 3 and preceding Ranger 5, underscores the sequential and iterative nature of early space programs, where each mission built upon the experiences and knowledge gained from its predecessors.

## Notable For
*   Being a US unmanned space probe, part of the early Ranger program.
*   Its launch on April 23, 1962, using an Atlas-Agena B launch vehicle.
*   Being manufactured by the Jet Propulsion Laboratory.
*   Its place in the sequence of Ranger missions, following Ranger 3 and preceding Ranger 5.

## Body

### General Information
Ranger 4 was a US unmanned space probe, classified as a type of space probe, which is an unmanned robotic spacecraft that does not orbit the Earth but explores further into outer space. It was part of the Ranger program. The entity is also known by its aliases, including レンジャー4号, 徘徊者4号, and 遊騎兵4號.

### Mission Details
Ranger 4 was launched on April 23, 1962. The launch took place from Cape Canaveral Launch Complex 12. The launch vehicle used for this mission was an Atlas-Agena B, which is a type of expendable launch system. A significant event in its mission was its atmospheric entry, which occurred on April 26, 1962.

### Manufacturing
The manufacturer of Ranger 4 was the Jet Propulsion Laboratory.

### Identifiers and Classifications
*   **COSPAR ID**: 1962-012A
*   **NSSDCA ID**: 1962-012A
*   **SCN**: 00280
*   **Instance of**: space probe
*   **Part of**: Ranger program
*   **Follows**: Ranger 3
*   **Followed by**: Ranger 5

## References

1. Jonathan's Space Report
2. Freebase Data Dumps. 2013