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Author Topic: Ships that Pass in the Day  (Read 1117 times)

Offline sam

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Ships that Pass in the Day
« on: April 25, 2009, 16:37 »
Quote
We’ve all become familiar with contrails — the cloud tracks that planes leave as they fly through certain altitudes:

http://blogs.discovermagazine.com/cosmicvariance/2009/04/24/ships-that-pass-in-the-day/
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Offline Simon

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Re: Ships that Pass in the Day
« Reply #1 on: April 25, 2009, 19:44 »
I'll have to look at those later.  :)
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Offline Clive

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Re: Ships that Pass in the Day
« Reply #2 on: April 26, 2009, 09:51 »
I've learnt something today!   :D
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Offline Simon

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Re: Ships that Pass in the Day
« Reply #3 on: April 26, 2009, 10:01 »
Me too!  :)
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Offline mistybear

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Re: Ships that Pass in the Day
« Reply #4 on: April 27, 2009, 09:22 »
I didn't know that either, amazing.
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