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Apr 20, 2020, 12:49 pm124 ptsScienceDaily
A galactic visitor entered our solar system last year -- interstellar comet 2I/Borisov. When astronomers pointed the Atacama Large Millimeter/submillimeter Array (ALMA) toward the comet on Dec. 15-16, 2019, for the first time they directly observed the chemicals stored inside an object from a planetary system…
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