Abstract
RECENT advances in our understanding of the origin of the Solar System have led to renewed speculation on the origin of comets1,2. Oort3 proposed that long-period comets originate in a cometary cloud about 105 AU from the Sun and Cameron4 has suggested that this cloud has its origin in association with the primordial solar nebula. Other investigators have placed the origin in the interstellar medium5.
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OPPENHEIMER, M. Comets and interstellar masers. Nature 254, 677–678 (1975). https://doi.org/10.1038/254677a0
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DOI: https://doi.org/10.1038/254677a0
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