The first contact binary is discovered — a comet that is two chunks somehow held together
When Comet 8P/Tuttle
passed close to Earth early this year, astronomers took its portrait with the
The portrait suggests that the body is the first known example of a comet that is a contact binary. Researchers aren’t sure how the structure formed.
John Harmon of
Arecibo Observatory reported the findings on October 11 in
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