Launch Vehicles

Juno I

United States

Citation Formats

General Reference

Space and Astronomy Atlas. "Juno I." Accessed September 1, 2026. https://dev-space.interactiveatlas.org/launch-vehicles/juno-i.

APA Style

Space and Astronomy Atlas. (n.d.). Juno I. Retrieved September 1, 2026, from https://dev-space.interactiveatlas.org/launch-vehicles/juno-i

BibTeX

@misc{spaceandastronomyatlas-juno-i,
  author = {Space and Astronomy Atlas},
  title = {Juno I},
  year = {2026},
  url = {https://dev-space.interactiveatlas.org/launch-vehicles/juno-i},
  note = {Accessed September 1, 2026}
}

A four-stage American launch vehicle developed by Wernher von Braun's Army Ballistic Missile Agency team from the Jupiter-C sounding rocket. It launched Explorer 1 on 31 January 1958, the first successful American satellite, discovering the Van Allen radiation belts in the process.

Facts

Vehicle Class

Light-lift expendable launch vehicle 1

Manufacturer

Army Ballistic Missile Agency / Jet Propulsion Laboratory 1

First Flight Date

1958-01-31 2

Date of its first successful flight, carrying Explorer 1; an earlier December 1957 stage-3 predecessor test is sometimes counted separately.

Status

Retired after six flights in 1958. 1

Stages

4 1

Sources

1. Encyclopedia Astronautica

2. NASA History Office

National Aeronautics and Space AdministrationView the Source

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