Astronomers Have a Plan to Detect a Possible Black Hole in Our Solar System GizmodoScientists propose plan to determine if Planet Nine is a primordial black hole Phys.orgAstronomers Want to Figure Out What the Hell Planet Nine Is Once and For All Futurism“Primordial” –Planet Nine May Be a Grapefruit-Sized Black Hole The Daily Galaxy --Great Discoveries ChannelIf Planet 9 is a Primordial Black Hole, We Might Be Able to See Flares When it Consumes Comets Universe TodayView Full Coverage on Google News