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Is Planet Nine a grapefruit-sized black hole in our Solar System? Search is on.
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10-07-2020, 12:08 PM
glend
(Glen)
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Join Date: Jun 2013
Location: Lake Macquarie
Posts: 7,033
I always believed you needed a certain mass to develop a black hole. A grapefruit sized black hole? Sounds impossible.
glend
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