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Location: UFOUpDatesList.Com > 1999 > Jan > Jan 4

Re: Military Ability to Detect & Identify UFOs

From: Bob Young <YoungBob2@aol.com>
Date: Mon, 4 Jan 1999 00:32:51 EST
Fwd Date: Mon, 04 Jan 1999 12:00:30 -0500
Subject: Re: Military Ability to Detect & Identify UFOs

>From: Michael Christol <mchristo@mindspring.com>
>Date: Sat, 02 Jan 1999 18:39:33 -0600
>Fwd Date: Sun, 03 Jan 1999 13:04:43 -0500
>Subject: Re: Military Ability to Detect & Identify UFOs

>>From: Farley Scott <SCOTTF@HughesLuce.com>
>>To: UFO UpDates - Toronto <updates@globalserve.net>
>>Subject: Re: Military Ability to Detect & Identify UFOs
>>Date: Thu, 31 Dec 1998 14:07:26 -0600

>>Others have already pointed out his bogus information such as
>>where he states that the moon does not rotate about its own
>>axis. This guy is supposed to be knowledgeable in celestial

>What? What! Where did you or anyone else get the idea that the
>moon rotates on it's axis? The moon rotates around the earth,
>keeping the same face to us at all times. It does not rotate as
>the earth rotates...

>Otherwise there would be no "backside" of the moon which is
>"unseen" by astronomers or the average person.


>Please help me to understand this....

Dear Mike, Farley and List:

Of course the Moon rotates on its own axis, just as the Earth
rotates on its own. They are almost, but not quite, in
lockstep. It is, however, a misconception that we always see
exactly the same face. In fact we can see 59% of the Moon's
surface from the Earth over a 30 year period. This is due to a
number of Libratory Motions:

1) The Moon's orbit is not circular but slightly eccentric. As
described by Kepler's Second Law of Planetary Motion, the Moon
moves faster when it is closer to the Earth in its orbit than
when it is further away from the Earth in its orbit. The Earth
and Moon are rotating at relatively fixed rates. What happens
is that sometimes the Moon is moving faster and we get to peek
around the following edge, when it is moving slower our rotation
carries our view forward, allowing us to peek around the leading
edge. This Libration in Longitude allows us to see 7.75 degrees
around Eastern or Western limbs of the Moon at different times
of the month.

2) A Libration in Latitude occurs because the Moon's orbit is
inclined 5 degrees 9 minutes to the ecliptis. Put simply,
sometimes the Earth is slightly higher than the Moon, allowing
us a peek over the North Pole of the Moon, and sometimes we are
lower allowing us to peek under the South Pole.

3) There is a Diurnal Libration because when the Moon is just
coming up in the East and almost setting in the West, we are
viewing it from opposite sides of the Earth, resulting in a 1
degree peek around the East or West limb.

4) There are also smaller libratory movements.

The combined effects can mean that the center of the Moon can be
shifted as much as 10 degrees, 16 minutes. Try looking at the
Moon in binoculars, say, once a week. Check out the different
position of Mare Crisium (the left ear of the Man in the Moon).
You will be amazed at how it changes. Sky & Telescope or
Astronomy mags give predictions for these shifts in each issue.

Bob Young

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