TIL Pluto hasn't completed an orbit around the sun since its discovery. Pluto's orbit takes about 248 years, and Pluto was discovered in 1930. en.wikipedia.org Submitted by irbinator t3_1071dmg on January 9, 2023 at 1:58 AM in todayilearned 187 comments 5,699
astroteacher t1_j3mhtno wrote on January 9, 2023 at 4:27 PM Pluto was closer to the sun than Neptune from about 1980-2000. Probably why it’s moon wasn’t discovered until about 1978. Permalink 2
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