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WholeSilent8317 t1_jd5kdfx wrote

Reply to comment by [deleted] in Is there another massive planet beyond Neptune? If so, why haven’t we found it? by Always2ndB3ST

Also a reminder that we don't know everything about the universe or physics yet! While Planet 9 would be a cool find, it always makes me think of Vulcan: the "planet" they used to explain Mercury's orbit with Newtonian physics.

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