Friday, September 13, 2019
Just passing through? A newly discovered comet, designated C/2019 Q4 (Borisov), likely came into the solar system from interstellar space, researchers say. Its origin is not yet confirmed, but it appears to be moving too fast to be captured by the Sun, indicating the object likely will sail back out of the solar system after reaching perihelion in December, continuing its lonely voyage between the stars.
If confirmed, the comet would be only the second such interstellar visitor discovered to date, coming nearly two years after the discovery of the unusual cigar-shaped object known as Oumuamua in October 2017.
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