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Location: UFOUpDatesList.Com > 2007 > Dec > Dec 13

Re: Skylab 3

From: Bruce Maccabee <brumac.nul>
Date: Thu, 13 Dec 2007 15:01:30 -0500
Archived: Thu, 13 Dec 2007 22:45:27 -0500
Subject: Re: Skylab 3


>From: James Smith <lunartravel.nul>
>To: ufoupdates.nul
>Date: Wed, 12 Dec 2007 15:57:33 -0500 (GMT-05:00)
>Subject: Re: Skylab 3

>>From: Brad Sparks <RB47x.nul>
>>To: ufoupdates.nul
>>Date: Sun, 2 Dec 2007 02:10:14 EST
>>Subject: Re: Skylab 3

<snip>

>>>There is a possibility that this
>>>particular object is low enough in altitude to get heated up and
>>>glow red. Therefore, it could be self illuminated via heat
>>>radiation. This could not explain why the object got dark upon
>>>entering shadow unless there is fortuitous timing of the
>>>object's disintegration. Another possibility is that it is
>>>heating up and giving off gases/particles that catch the sun-
>>>light, increasing its effective size. Then fade out would match
>>>going in shadow.

>>Do you see any earth background in the Skylab red object photos?
>>Any trace of the earth's limb anywhere?? A re-entry occurs at
>>about 60-100 miles, far far below the Skylab at 273 miles
>>height.

>Another thing I thought of was that apogee (high point in the
>orbit) and perigee (low point) would not be equal for an object
>just prior to re-entry. So, the object could get heated up to
>glowing at a lower altitude during perigee and then be at or
>above the Skylab apogee. Then it just has to glow until it
>comes into range at the higher apogee. Keeping a glow for an
>hour seems far fetched.

This would require that the object penetrate the atmosphere
enough to get very hot (glowing "red") and then retain the heat
as it clilmbed back up through the atmosphere and into the
"cold" of space. It would have have the surface to volume ratio
relatively large because the surface "provides" the heating (as
it interacts with the air, but the volume stores the heat (heat
capacity). Being small means, in turn, that it has to get close
to the SL3 while still hot in order to be seen and photographed
for about 10 minutes. A good question would be this: can any
orbital object (not a meteor) penetrate the atmosphere deeply
enough to become red hot (and a bright red at that) and then
leave the atmosphere and climb 100 miles or so (while in a
decaying orbit) while retaining its brilliance, or would it
simply continued to burn up in the atmosphere once it gets low
enough to heat up to "red hot.'

>Based on your updated SL3 web page, I want to re-emphasize the
>conflict of dates of the laser experiment photos. The mission
>report for Skylab 3...

>http://tinyurl.com/2jnrmg

>shows on page 5-3 that the dates of the laser photos are Sept 19
>(good ones) and Sept 20 (blurred ones). This conflicts with the
>laser experiment report which states the images were from Sept
>4. This is pretty important since on Sept 4 we had some fairly
>long duration "close" passes. I think the Skylab transcripts
>could help pinpoint/ confirm the times/days.

The above tinyurl didn't work, but I searched the ntrs.nasa site
and found the report you reference here.

I am quite certain that the report is wrong in saying that the
laser experiments occurred on the 54th and 55th days (Sept 19
and 20). The guys who actually ran the laser (at Goddard) would
know what days they operated the laser (Sept 4 and 5) which are
days 39 and 40 of SL3.

The report provided a little more information on the "red
satellite" sighting in section 10.5 labelled "Visual
Observations and Unusual Events." It says that the object
changed to a more reddish hue during the last 20 seconds of
visibility. This would make some sense if the object was red
colored (reflecting red).

Before entering the shadow transition region (where the sunlight
is reddened by the atmosphere) the object would be illuminated
by "white" light (direct sunlight). But while going through the
sunlight- redenned region, it would be illuminated by red light,
bringing out the red even more, but also being less bright.

This would seem to argue for red reflection rather than red
light emission.

However if the object were both reflecting sunlight like metal
("white" reflection) and also emitting bright red light (not a
"normal" satellite) then the resulting color would be a
"diluted" red (red emission plus white light reflection) while
above the shadow transition region. When the object went into
the reddened sun region the net color would no longer be a
"diluted" red but rather a "saturated" red (red emission plus
red reflection).



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