Re: Is this a signal from aliens?

From: Moorad Alexanian (alexanian@uncwil.edu)
Date: Thu Jan 18 2001 - 09:36:13 EST

  • Next message: Joel Peter Anderson: "Re: Is this a signal from aliens?"

    I am curious too. Of course, how to spend resources is another matter.
    Moorad

    -----Original Message-----
    From: Vandergraaf, Chuck <vandergraaft@aecl.ca>
    To: 'Moorad Alexanian' <alexanian@uncwil.edu>
    Cc: asa@calvin.edu <asa@calvin.edu>
    Date: Thursday, January 18, 2001 8:20 AM
    Subject: RE: Is this a signal from aliens?

    >Moorad,
    >
    >Considering the low probability of detecting anything remotely intelligent
    >from outer space, one wonders why society spends the time and effort on
    >this. Could it be that, deep down, some are afraid that mankind is "home
    >alone"?
    >
    >Chuck Vandergraaf
    >
    >-----Original Message-----
    >From: Moorad Alexanian [mailto:alexanian@uncwil.edu]
    >Sent: Thursday January 18, 2001 7:51 AM
    >To: asa@calvin.edu
    >Subject: Is this a signal from aliens?
    >
    >
    >Wednesday, 17 January, 2001, 16:51 GMT
    >
    > http://news.bbc.co.uk/hi/english/sci/tech/newsid_1122000/1122413.stm
    >
    >Still no sense in signal
    >
    >Is this a signal from aliens?
    >
    >By BBC News Online science editor Dr David Whitehouse
    >
    >A detailed look at the point in space from where an intelligent signal
    might
    >have come has revealed nothing unusual.
    >
    >
    >
    >The Ohio Big Ear detected the Wow signal
    >
    >The observations, using the multiple radio dishes of the Very Large Array
    >(VLA) in New Mexico, US, add to the mystery of what has been called the
    >"Wow" event.
    >
    >In August 1977, radio astronomers detected what could have been a signal
    >from intelligent life in space. But it happened only once.
    >
    >Now, two researchers, Robert Grey and Kevin Marvel, have used the VLA to
    >look at the source location with unprecedented sensitivity. They saw
    nothing
    >strange or anything that could explain the signal.
    >
    >Narrow band
    >
    >The Wow signal as it has become known is often described as our best
    >candidate for a signal from an alien intelligence in space.
    >
    >On 15 August, 1977, a burst of radio waves was detected by the now
    >dismantled Big Ear radio telescope of Ohio State University. The person who
    >spotted it, astronomer Jerry Ehman, was so surprised that he scribbled
    "Wow"
    >on the print-out.
    >
    >The event had all the properties that astronomers expected in a signal from
    >an alien intelligence. It was confined to a narrow band of frequencies and
    >it was very close to the "hydrogen line", a natural signpost in the
    >spectrum.
    >
    >Because the Ohio telescope cannot move, it was only possible to see the
    >signal as it passed across the telescope's field of view. From the way the
    >signal was detected, astronomers were certain it was coming from a point on
    >the sky.
    >
    >Mystery remains
    >
    >It only lasted 72 seconds and although researchers later looked at that
    same
    >patch of sky over a hundred times, they saw nothing. The signal, if it was
    a
    >signal, was a one-off event.
    >
    >
    >
    >The VLA was used for a more sensitive search
    >
    >Some researchers have said it was man-made interference but others pointed
    >to the signal's characteristics and said it definitely came from the sky.
    >
    >Since 1977, other radio astronomers have looked at that spot on the sky in
    >the hope of a repeat performance, but to no avail.
    >
    >The latest series of observations, described in the current issue of the
    >Astrophysical Journal, are more than a 100 times more sensitive than the
    >original Ohio observations.
    >
    >Grey and Marvel see two faint radio sources at the position that Wow came
    >from but both are nothing unusual.
    >
    >So, the mystery of the Wow signal remains.
    >
    >



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