Scientists spot the first 'interstellar immigrant' in our own solar system

The discovery could give us clues about how life arrived on Earth

Andrew Griffin Monday 21 May 2018

The asteroid is named (514107) 2015 BZ509 and is currently in orbit around Jupiter. It was always known to be a bizarre object, and scientists have finally found why: because it didn't begin life here.

In our solar system, all of the planets and most of the rest of the objects move around the Sun in the same direction. But the alien rock moves the opposite way…..

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