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- Newsgroups: talk.origins
- Path: sparky!uunet!mcsun!news.funet.fi!hydra!klaava!cust_ts
- From: cust_ts@klaava.Helsinki.FI (Tero Sand)
- Subject: Re: Cosmos without Gravitation
- Message-ID: <1992Dec30.103217.13242@klaava.Helsinki.FI>
- Organization: University of Helsinki
- References: <1992Dec28.133106.22923@linus.mitre.org> <1992Dec29.143703.7029@hsr.no>
- Date: Wed, 30 Dec 1992 10:32:17 GMT
- Lines: 28
-
- In article <1992Dec29.143703.7029@hsr.no> onar@hsr.no (Onar Aam) writes:
- >>13. If planets and satellites were once molten masses...they would not have been
- >>able to
- >>obtain spherical form, especially those which do not rotate, as Mercury or the
- >>moon (with
- >^^^^^
- >>respect to its primary)
- >
- >
- >That is simply not true. The moon is rotating (ever heard of earth rise?)
- >although only slightly. Surely the moon rotated much more in the past,
- >but because of the tidal forces this rotation has retarded. (And yes, those very
- >same tidal forces are retarding the rotation of the earth as well.)
- >
- >
-
- Surprise! So does Mercury.
-
- Actually: Mercury is rotating slowly in respect to its position around
- the Sun, ditto for the Moon and Earth. If the Moon didn't rotate, it
- wouldn't always show the same side to Earth.
-
- Tero Sand
- --
- EMail: cust_ts@cc.helsinki.fi or custts@cc.helsinki.fi
- "I feel most ministers who claim they've heard God's voice are eating
- too much pizza before they go to bed at night, and it's really an
- intestinal disorder, not a revelation." - Reverend Jerry Falwell
-