Curious layman Posted October 1, 2019 Posted October 1, 2019 Maybe... According to astronomers Planet nine maybe hard to spot because it's a primordial black hole- a superdense lump of matter about the size of a tennis ball. And if that's the case, then we need to search for it in an entirely different way. More at link..https://www.technologyreview.com/s/614441/is-planet-9-actually-a-primordial-black-hole/
Strange Posted October 1, 2019 Posted October 1, 2019 The full paper is here: https://arxiv.org/pdf/1909.11090.pdf Complete with life-size diagram! (How often can papers on astronomy do that)
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