RE: Today on --

From: Ralph McConahy (
Date: Thu Jan 13 2005 - 15:20:12 EST

  • Next message: Leo Barhorst: "LB obs 2005 Jan 13"

    I may have to retract this somewhat--it all depends on how we define
    According to: the Impactor is
    a "smart" projectile, battery powered that not only does some last minute
    navigation but also takes photos until impactm sending data back to its
    mother-ship at a 64 Kbps rate. Nevertheless, the heart and brain of Deep
    Impact will live on after the Impactor is gone.
    I meant to mention in my last that this will be a visual event for many
    around the Pacific rim.
    -----Original Message-----
    >From earlier posts...
    Re: Deep Impact
    >>NASA's first mission to purposely destroy a spacecraft
    >>>>They seem to have forgotten the Ranger program
    The truth is, the Deep Impact spacecraft will not be destroyed. The
    spacecraft carries with it a 370 kg copper-tipped projectile that will be
    released and slammed into Comet Tempel 1. At the moment of projectile impact
    the spacecraft will be nearly 8,700 km from the comet, observing, capturing
    images, analyzing. As the spacecraft passes by the comet, about 14 minutes
    after projectile impact, it will have oriented itself so its hardened shield
    will protect it from any debris coming from the comet (either natural or
    caused by the impact). After fly-by, its high-res camera and other onboard
    instruments will continue to view the comet from its backside. If the
    spacecraft stays healthy it may be targeted to other comets to perform
    other, sans-projectile, missions.
    Sorry, no Ranger program here. Don't listen to everything you hear in the
    news :)
      Ralph McConahy
      38.3305N,  75.6967W, 8m MSL
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