October 23, 2021

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Interstellar interloper 2I/Borisov may be the most pristine comet ever observed

5 min read


The first known interstellar comet to visit our solar system may be the most pristine ever found, never passing near a star until visiting our own, researchers say.

In 2019, scientists discovered the comet 2I/Borisov as it streaked into the solar system. The comet’s speed and trajectory revealed it was a rogue comet from interstellar space, making it the first known interstellar comet and the second known interstellar visitor after pancake-shaped 1I/’Oumuamua.



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