ALMA Detects Molecular Activity in Largest Known Oort Cloud Comet

Jun 17, 2025 - 15:15
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ALMA Detects Molecular Activity in Largest Known Oort Cloud Comet
An artist rendition of comet C/2014 UN271. Image credit: NSF / AUI / NSF / NRAO / M.Weiss.

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed comet C/2014 UN271 (Bernardinelli-Bernstein) while it was more than halfway to Neptune, at an astonishing distance of 16.6 times the distance between the Sun and Earth.

The post ALMA Detects Molecular Activity in Largest Known Oort Cloud Comet appeared first on Sci.News: Breaking Science News.

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