Utterly Meaningless » Blog Archive » AS A MATTER OF FACT, IT’S ALL DARK
  • AS A MATTER OF FACT, IT’S ALL DARK

    Filed at 8:28 am under by dcobranchi

    I had never understood how a planet or moon became gravitationally locked, so that one side always faced “in.” This page, via APOD, does a really nice job explaining it.

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