Newsgroup: it.discussioni.misteri
Titolo: Misterioso segnale dallo spazio

164 TELEVIDEO Gi 27 Gen 12:20:51
             SEGNALI DA MARTE: NASA,
             FORSE LA SONDA MARS POLAR
 Tre giorni dopo che la Nasa aveva di-
 chiarato "defunta" la sonda Mars Polar
 Lander, ammutolita nella sua discesa su
 Marte il 3 dicembre scorso,inaspettata-
 mente un centro radio della Stanford
 University ha rilevato un misterioso
 segnale proveniente dallo spazio.
 Sarà lei? si chiedono gli scienziati.
 Più cauto il capo del progetto Nasa,
 Richard Cook :"Questo tipo di segnale
 viene sicuramente da un trasmettitore
 artificiale, ma non siamo sicuri venga
 da Marte". Il contatto è stato subito
 ristabilito.Ora si attende la risposta.
(Però ai siti NASA non c'è traccia di
questa televideata.)
Saluti
Paolo P.

 questa televideata.)
Rettifico. Se ne parla qui:
 
http://mars.jpl.nasa.gov/msp98/news/mpl000125.html
Scusate.
Paolo P.

sono iscritto alla ML del JPL e ho ricevuto quanto segue:
MEDIA RELATIONS OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIFORNIA 91109.  TELEPHONE 
(818) 354-5011
http://www.jpl.nasa.gov
               Mars Polar Lander Mission Status
                       January 25, 2000
     Mission managers have decided to send another set of 
commands to Mars to investigate the possibility that a signal
detected by a radio dish at California's Stanford University
came from Mars Polar Lander.
     The commands were sent at 10 a.m. PST today.  They will 
instruct the lander, if it is operating, to send a signal 
directly to Earth to the antenna at Stanford on Wednesday, 
January 26, at approximately 1 p.m. PST.  The Stanford receiving 
station will listen again during the window on Wednesday to see 
if it picks up a signal that could originate from Mars.  The 
results of this test will not be immediate and it will take the 
team several days to process the data.
     Mission managers sent commands several times in December and 
January instructing Polar Lander to send a radio signal to the 
45-meter (150-foot) antenna at Stanford. Although no signal was
detected in real-time, the team in charge of the Stanford antenna
says that after additional processing of the data they may have
detected a signal that could have come from Mars during tests
on December 18 and January 4. Because the signal was so weak, 
it took several weeks for the Stanford team to process their 
data and reach this conclusion.
     "This week's test is a real long-shot, and I wouldn't want 
to get anyone too excited about it," said Richard Cook, Polar 
Lander project manager at NASA's Jet Propulsion Laboratory, 
Pasadena, CA.  "The signal that the Stanford team detected is 
definitely artificial, but there are any one of a number of 
places it could have originated on or near Earth.  Still, we need 
to conduct this test to rule out the possibility that the signal 
could be coming from Polar Lander."
     If in fact the signal were from Polar Lander, two failures 
would have had to occur.  First, the lander's X-band radio that
it would use to transmit directly to Earth would have to be broken.
Second, there would have to be a problem somewhere in the relay
with Mars Global Surveyor that prevented the signal from being 
picked up and relayed by the orbiter.  It is unlikely that a broken 
transmitter on the lander could be fixed, and unclear whether a 
problem with the relay could be resolved.
     Although the Stanford data from the previous tests took 
several weeks to process, the team expects to have results within 
several days now that they know what they are looking for.
     Even if the signal were coming from the lander, there is 
little hope that any science could be returned. However, it would 
give the team a few more clues in trying to eliminate possible 
failure modes.
     Mars Polar Lander is managed by the Jet Propulsion 
Laboratory for NASA's Office of Space Science, Washington, DC. 
Lockheed Martin Astronautics Inc., Denver, CO, is the agency's 
industrial partner for development and operation of the 
spacecraft. JPL is a division of the California Institute of 
Technology, Pasadena, CA.
                              #####
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--
bye, Wolf
"Sometimes I think the surest sign that intelligent life
 exist elsewhere in the Universe is that none of it
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