Ever seen a piece of 1960s space hardware still haunting Earth's neighborhood decades later? 🚀
This NASA JPL animation shows J002E3 - the spent S-IVB third stage from Apollo 12's Saturn V (launched November 1969).
In 2002, amateur astronomer Bill Yeung spotted it and logged it as a near-Earth asteroid. Turned out to be a 33-year-old rocket stage.
Watch the cyan path trace its journey from May 23, 2002 to June 17, 2003. It drifts in from the left, loops and twists around Earth and the Moon in wild, non-repeating arcs, threading past the L1 point - the gravitational gateway between Earth's and the Sun's sphere of influence - while the Moon tugs it back and forth in a chaotic, unpredictable dance.
No neat ellipses. No tidy repeating orbits. Just a 50-year-old rocket stage being slowly torn between three gravitational masters.
No trajectory predictor in 1969 could have told you where this thing would be in 2002. Chaos saw to that.
🧵 Part 2: the full orbital mechanics breakdown ↓