re: Hubble Bubble

From: Walter Nissen (
Date: Thu Mar 09 2000 - 09:10:51 PST

  • Next message: Richard Baldridge: "Taurus Launch cleared for Sunday 3/12" ("Pesky") writes:
    > I am somewhat new to satellite observing.  I am enjoying it though I
    > cannot shake the feeling that we are looking at manmade objects rather
    > than nature.
    Your ambiguous feeling is shared by many.
     ("Ralph McConahy") writes:
    > Since Hubble is at a 28 degree
    > inclination, the further north or south from the equator you are the
    > atmosphere you will be looking through when (if) you see it. If you are
    > far north or south on the earth (above or below 38 degrees N or S
    > then you won't see it at all. The 3.0 in the top line of the elset means
    I realize you were writing under the burden of a pseudonymous
    correspondent who failed to mention his latitude and longitude, but 38
    degrees is a very conservative limit.  HST is routinely seen here at
    altitude 16 degrees.  I'm sure there are countless observers further
    North who make the effort to see her, also (I'd mention South out of
    respect for our fine upside-down contributors, but we haven't heard much
    from those below -38 latitude).
     ("Ted Molczan") writes:
    > By exercising little or no control over our light emissions, we humans
    > created light pollution, which has largely ruined astronomy for those
    > in and near cities.
    Thanks so much for your insightful and wise message.  It omits mention
    of the contribution of the air transport industry in dumping vast
    quantities (does anyone know the actual amount per year?) of waste cloud
    into the atmosphere.  NASA has been able to measure the effect
    quantitatively, which, based on my recollection of earlier days, is
    quite substantial.
    Regrettably, more light and more cloud interact synergistically.
    IDA,, has many details on the win-win-win nature
    of efforts for more effective lighting, less wasted fuel and money, and
    darker skies.  Win-win-win.
    Walter Nissen         
    -81.8637, 41.3735, 256m elevation
    Did anyone see the article on "Project Echelon" on "60 Minutes" a week
    or so back?  If you did, you presumably have a hightened appreciation
    for Lord Acton's immortal words:
    Power corrupts.  Absolute power corrupts absolutely.
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