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- Path: sparky!uunet!pipex!warwick!uknet!edcastle!aifh!aifh.ed.ac.uk!tw
- From: tw@aifh.ed.ac.uk (Toby)
- Newsgroups: sci.physics
- Subject: Why does the moon keep the same face to the Earth?
- Message-ID: <1993Jan23.154116.13409@aifh.ed.ac.uk>
- Date: 23 Jan 93 15:41:16 GMT
- Sender: tw@aifh.ed.ac.uk (Toby Walsh)
- Reply-To: tw@aifh.ed.ac.uk (Toby)
- Organization: Dept AI, Edinburgh University, Scotland
- Lines: 13
-
-
- Some friends and I were trying to work out why the moon maintains
- the same face towards the earth. Our favourite theory is that the
- moon is asymmetric, and its orientation is a minimum of gravitional
- energy - this would explain why it maintains this orientation under
- disturbances like large asteroid strikes, gravitational influences
- of the sun .... A rival theory was that its angular velocity is
- a direct consequence of it being spun off the Earth (the "where did the
- Pacific Ocean go?" theory). However, I am more dubious that this
- would be so stable? Can anyone help answer this question? Thanks
- in advance,
-
- toby
-