Is 'Planet Nine' actually a grapefruit-sized black hole? Big new telescope could find out
Is 'Planet Nine' actually a grapefruit-sized black hole? Big new telescope could find out
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A coming sky survey will help test a wild idea — that a grapefruit-sized black hole lurks undiscovered in the outer solar system.

July 11, 2020 at 05:14PM
via Space.com read more...
By
A coming sky survey will help test a wild idea — that a grapefruit-sized black hole lurks undiscovered in the outer solar system.
July 11, 2020 at 05:14PM
via Space.com read more...
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