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The “green comet” passes Earth before disappearing into the outer reaches of the solar system

Comet C/2022 E3 (ZTF) made its closest approach to Earth this morning before it likely leaves our solar system for good. But it can still be observed in the next few days from the northern hemisphere.

Discovered by astronomers Zwicky Transit Attachment (ZTF) At California’s Palomar Observatory, Comet C/2022 E3 (ZTF) orbits the Sun once every 50,000 years, which means it last passed our planet in the Stone Age, yet the mysterious Stonehenge formation was not built.