Explorer 3, a JPL/ABMA Earth-science satellite, launched on a Juno I from Cape Canaveral on 26 March 1958 into a highly elliptical orbit. Its cosmic-ray and micrometeorite instruments confirmed the Van Allen radiation belts discovered by Explorer 1.
- Outcome
- Success
- Orbit
- Elliptical
- Elliptical orbit
- Payload to orbit
- 8 kg
- Flight
- 3rd
- of 6 Juno-I flights
- Date and time
- 26 March 1958, 17:38 UTC
- Rocket
- Juno-I
- Builder
- Chrysler
- Launch site
- Launch Complex 26A, Cape Canaveral SFS, FL, USA
- Payload
- Earth Science
- International designator
- 1958-003
- Launches in 1958
- 5th of 28
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
View satellites in Space Atlas