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A comment on Alone in a Crowded Milky Way. Parent comment

Re:Alone in a Crowded Milky Way by emiliobumachar on Wednesday January 01, 2020 @08:48PM (#21932300)
Sorry to pile on, and I don't think you deserved the downvotes, but I'd like to point out there may be an undiscovered planet in the solar system.

https://en.m.wikipedia.org/wiki/Planet_Nine

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Re:Alone in a Crowded Milky Way by hnuser123456 on Thursday January 02, 2020 @03:39AM (#21933824)
There may also/instead be an undiscovered primordial black hole in the solar system.

https://www.sciencemag.org/news/2019/09/planet-nine-may-actu...

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