SUBJECT: UFO's and the Shuttle                               FILE: UFO46

PART 4

       Video  Encryption:  Hoagland  alleges  that  since  STS-48, all
       external  STS  video has been encrypted and will be  viewed only
       after NASA review and approval. I have checked with a NASA Public
       Affairs  official, and have personally verified, that things (as
       usual)  are not quite what Richard Hoagland alleges.  On  STS-42,
       the  second  flight  after STS-48 (the STS-44  DoD  mission went
       between   them),   the  International   Microgravity   Laboratory
       (Spacelab)  science  group requested that medical  video  imagery
       from  the cardiological studies (sonogram images) be  treated as
       privileged medical information, as all previous audio
       conversations with doctors had been. NASA discovered that having
       to  continuously reconfigure the White Sands TDRSS site and the
       TDRSS satellites back and forth for encrypted video  transmission
       was  a laborous process. Rather than spend all that time, it was
       decided  to go into encrypted mode continuously and  decrypt the
       raw  video at NASA Goddard for immediate release over the "NASA
       Select"  circuit.  Normally, when there was  shuttle  video, the
       White  Sands to Goddard raw video link had been unencrypted, and
       the   Goddard  relay  to  "NASA  Select"  required   no   further
       processing;  but  when  medically-privileged  video  was  to be
       transmitted  (a  new innovation on STS-42,  planned  for  years),
       complex encryption processes had to be initiated on the  shuttle,
       on  the  TDRS  satellites, at White Sands, and  at  Goddard. The
       procedure  for constant encryption was implemented to  avoid the
       cost of many switchovers between modes. But the NASA Select video
       from  Goddard  was  to continue to be decrypted except for the
       medical  transmissions, which were to be openly announced on the
       audio  feed,  just  not piped into a million  homes  and  schools
       nationwide.  Since  then, the NASA Select video  (originating at
       NASA  Goddard,  and containing other sources of video,  too) has
       continued to be transmitted as before, with the only change that
       the  White Sands to Goddard link (which viewers could  previously
       observe  when it was active) is now encrypted. There is no hint
       from air-to-ground conversations that anything other than the new
       (and long scheduled) medical video imagery is being  interrupted.
       And  although  it is encrypted, the White Sands raw feed can be
       observed  to tell if there is a video signal or not on the feed,
       so I am told.

       Conclusion:  The standing explanation, that the objects are near
       the  shuttle, are sunlit, and are affected by the plume field of
       an RCS jet firing, remains valid.

       P.S. Hoagland made a number of other factually erroneous comments
       about  live  planetary  image transmissions.  He says that all
       previously  NASA  planetary  probes  transmitted  live   imagery.
       Actually,  only fly-by probes did that, particularly the fly-by
       probes which had slow transmission rates which took many  minutes
       to build up each image. Probes orbiting other planets (Venus and
       Mars, for example), do not (and I believe, never HAVE)
       transmitted  live imagery, since they are frequently occulted by
       the planet's mass. Each orbit's imagery is stored and dumped over
       a short portion of each orbit, and the imagery data is  initially
       decoded over the next hours and days. Live coverage of the actual
       image transmission would usually be blank, but for a few  minutes
       every few hours would show images flipping across the screen at a
       very fast rate, if there was enough computer power to decode them
       in  this  "real  time" speed. There is no  practical  reason why
       computers have to be built so powerful to keep up with the high-
       speed  dump rate for a few minutes, then rest idle for  the next
       several  hours.  Outside  of avoiding  whines  about  censorship,
       there's no reason to do so.

       Robert Sheaffer - Scepticus Maximus - [email protected]

Past Chairman, The Bay Area Skeptics - for whom I speak only when
authorized!

    "Mystical explanations are considered deep. The truth is that
     they are not even superficial."



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