I registered this domain (libration.org) awhile ago, intending to put up some graphics illustrating why the moon appears to wobble in the sky as it goes around the Earth. I haven't gotten that finished yet, but in the meantime I have come up with some other questions for which I could not find satisfactorily illustrated answers on the World Wide Web, so I'll put those up here as I get a webpage pulled together for each one.
All content copyright 2019-2024 by Mark Looper, except as noted. Reuse of my copyrighted material is authorized under Creative Commons Attribution 4.0 International license (CC BY 4.0).
New 3 January 2019, updated 7 April 2024