🚀 go-pugleaf

In article <56bnpu$4ge@epx.cis.umn.edu>, Robert Fentiman
<rfentima@ub.d.umn.edu> writes
>/  ALSO SPRACH RFENTIMA / Robert Fentiman - University of Minnesota, Duluth  \
>| Amiga 3000/25/9/100  \ rfentima@ub.d.umn.edu or  Robert.A.Fentiman@umn.edu / 
>|__MST3K+Starwars+B5 Fan_\______Physics/Geology_Major_-_CS/Math Minor_______/
>\_____________Pain is the body's way of saying "Don't do that!"____________/

A pretty neat summary on the K-T boundary. There have been other ,
lesser impact extinctions, eg the Eocene at 39my ago, and one c 91my ago
to name but two
Most asteroids lie between Mars and Jupiter, but the troublesome  ones
(2,000 it is believed<10 kms in size) fall into 3 groups
 Amor, Apollo, and Aten
Amors range elliptically from the Main belt to inside Mars' orbit,
sometimes <0.3 AU from earth
Apollos, range from the Main belt to cross Earth's orbit, while the 
Atens are mostly within Earth's orbit, and cross it on the way OUT to
Aphelion; These come "out of the Sun", as the fighter pilots have
it,mand so are hard to spot, but could make excellent sopurces of raw
materials, more accessible than Luna, for a mature human civilization. 
It is abundantly clear that we will never achieve our full ;potential as
a species stuck on earth, and that the Near Earth asteroids are
providentially placed for us to bootstrap our way into the future. 
 Providence has given us a clear message
"Heed the visionaries, colonise Space and grow , or listen to the little
Earthers and face a deserved extinction - we have no use for failures in
this Galaxy!"
 Interested "readers" are invited to visit Space Age Associates
http://people.delphi.com/astronist/index.html
-- 
Michael Martin-Smith