A researcher prepares a Centaur 6A second-stage rocket for a series of tests in 1964. File photo: Nasa
Mystery space object orbiting Earth is rocket from 1966 failed moon mission
- Object near Earth was classified as an asteroid after discovery in September
- Astronomers now say it is the booster of a rocket that launched in 1966
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Space
A researcher prepares a Centaur 6A second-stage rocket for a series of tests in 1964. File photo: Nasa