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A comment on What if Planet 9 is a Primordial Black Hole? (2019). Parent comment

Re:What if Planet 9 is a Primordial Black Hole? (2019) by lvs on Friday August 13, 2021 @12:22PM (#28170958)
A very large black hole would have a hard time sneaking up on me, but one the size of a bowling ball on the other hand...
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