Explorer 2, the second JPL/ABMA Explorer satellite on a Juno I from Cape Canaveral on 5 March 1958, intended to continue radiation-belt and micrometeorite measurements. The solid fourth stage failed to ignite and the payload never reached orbit.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 2nd
- of 6 Juno-I flights