Failed · Failure
A United States lunar flyby attempt that fell short of escape velocity but returned data revealing a second radiation belt around Earth.
- Destinations
- Moon
- Launch vehicle
- Juno 2 (Juno II)
- Launch site
- Cape Canaveral, United States
- Countries
- United States
- Mission types
- Flyby
Chronology
Mission timeline
Mission architecture
Vehicles
Pioneer 3 · Spacecraft
Destinations: Moon
Trajectory record
Trajectory dataset not yet available
No verified trajectory dataset is committed for this mission, so Mission Atlas renders no path.
Provenance
Sources
Each source is listed once and labeled with the mission, event, trajectory, or destination/body context it supports.
Data verified through August 23, 2026
- Pioneer 3 - NASA NSSDCA Spacecraft Details — NSSDCAArchive · Supports: mission claims · event claims
- Moon Facts — NASAOther · Supports: destination/body context
- Planet Sizes and Locations in Our Solar System — NASAOther · Supports: destination/body context