From my research it doesn't appear to be from tidal locking with the sun.

Is there somewhere I can start reading about the probable causes?

  • $\begingroup$ This question contains some of the hypothesized causes, however doesn't contain links to references. It might help point you in the right direction, though: astronomy.stackexchange.com/questions/26/… $\endgroup$
    – Cody
    Commented May 26, 2017 at 22:30
  • $\begingroup$ Tidal locking with the sun may be why it spins slowly, that is, assuming it spun faster in the past (nobody knows). Some good answers to the same question here: space.stackexchange.com/questions/2289/… as for where to start looking, a quick google search gave me a number of solid articles. Keep in mind, it's generally agreed that nobody knows, but google would be a place to start for some solid (and probably some wacky) theories. $\endgroup$
    – userLTK
    Commented May 27, 2017 at 0:49
  • 1
    $\begingroup$ Why not? What did your research effort so far reveal? $\endgroup$
    – Walter
    Commented May 27, 2017 at 13:20
  • $\begingroup$ Because it's fat. $\endgroup$
    – Malekai
    Commented Jun 22, 2019 at 15:21


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