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- Newsgroups: sci.physics
- Path: sparky!uunet!gatech!hubcap!jtbell
- From: jtbell@hubcap.clemson.edu (Jon Bell)
- Subject: Re: Solar Eclipse Question
- Message-ID: <1993Jan22.165432.6120@hubcap.clemson.edu>
- Organization: Presbyterian College, Clinton SC
- References: <1993Jan21.230236.46625@kuhub.cc.ukans.edu>
- Date: Fri, 22 Jan 1993 16:54:32 GMT
- Lines: 16
-
- In article <1993Jan21.230236.46625@kuhub.cc.ukans.edu> christos@kuhub.cc.ukans.edu writes:
-
- >1. Is the moon rotating around the earth in a single plane sothat every 29 days
- >it comes in between the sun and the earth? If that is the case different places
- >of the earth should have solar eclipse every 29 days(period of the ratatioon of
- >the moon around the earth).
-
- The moon's orbit does indeed lie in a single plane, but that plane is
- tilted with respect to the plane of the earth's orbit around the sun.
- Therefore the moon's and sun's apparent paths in the sky intersect in
- only two places. We get an eclipse only when the sun and moon arrive at
- one of the intersection points at the same time, which isn't very often.
-
- Jon Bell / Dept. of Physics & Comp. Sci. / Presbyterian College / Clinton SC
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