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- Newsgroups: sci.space
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!saimiri.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!stein.u.washington.edu!labmas
- From: labmas@stein.u.washington.edu (Michael Andersson)
- Subject: Re: ROTATION OF THE MOON
- Message-ID: <1992Nov19.220246.6719@u.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington, Seattle
- References: <1992Nov18.163804.1213@sunspot.noao.edu> <1992Nov19.144441.5498@col.hp.com>
- Distribution: na
- Date: Thu, 19 Nov 1992 22:02:46 GMT
- Lines: 12
-
- In article <1992Nov19.144441.5498@col.hp.com> dag@col.hp.com (David Geiser) writes:
- >> The same thing is happening, much more slowly, to the earth --
- >> friction with the tides and within the "solid" earth is slowing the
- >> rotation rate by something on the order of 1 sec every century. We can
- >> actually measure it (the slowdown) nowadays. Love those atomic clocks!
- >
- >Do you know if that rate is constant? Say around 63M years ago,
- >around the time of the end of the dinosaurs, the day would have
- >been 175 hrs longer!
-
-
- No. If the rotation is slowing, then days used to be shorter.
-