Another fun one is the long term orbits of expended Apollo hardware. The below article shows the booster entering by way of L1 into something like a Molniya orb

Another fun one is the long term orbits of expended Apollo hardware. The below article shows the booster entering by way of L1 into something like a Molniya orbit until leaving again. Yeung’s discovery, formally named J002E3, became the focus of an intense analysis with a unique result. The object was not an asteroid captured by Earth in a cosmic game of coincidence. This was a relic of humanity’s space race: an Apollo-era rocket that had been placed in orbit around the Sun — and then returned to Earth. https://www.astronomy.com/space-exploration/how-a-long-gone-apollo-rocket-returned-to-earth/ https://www.astronomy.com/space-exploration/how-a-long-gone-...