Interstellar visitors open new window to the cosmos
Dec 06, 2019
3 minutes
All eyes are on Comet Borisov. But this isn’t just any comet.
The cosmic block of ice, rock, and gas hurtling toward our sun came from another solar system. It’s only the second of its kind ever spotted.
The first interstellar visitor, a peculiar object dubbed ‘Oumuamua, flashed through the night sky in October 2017. Scientists didn’t expect to see another until after 2022. But Borisov is here now, burning bright in a cloud of dust and cyanogen gas that makes it closely resemble our solar system’s comets.
Together, these visitors herald a
What happened when we stopped lookingA new window into the cosmosYou’re reading a preview, subscribe to read more.
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