I wish (to harp back to an earlier post I made) they would not list miles=20
per second as m/s - for a second I couldn't work out how 35km/s =3D 22 metr=
es=20
per second, until my brain kicked in and  managed to multiply by 0.6 and=20
realised that m=3D miles not metres. <hmmph>!!

I wonder how long it would take for any shock wave or debris to reach us=20
from Mars if it did hit?=20

Colin
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cdb, colin@btech-online.co.uk on 4/03/2013
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