http://www.nserc.und.edu/learning/QandA Ask a Scientist! Wed, 24 Sep 2008 00:34:15 +0000 http://wordpress.org/?v=2.6 en http://www.nserc.und.edu/learning/QandA/?p=1 http://www.nserc.und.edu/learning/QandA/?p=1#comments Thu, 18 Sep 2008 17:54:22 +0000 alex http://maple.umac.org/wp/?p=1 The NASA DC-8 aircraft is an airborne science laboratory.  It is a national treasure that is used by collaborating investigators to promote scientific discovery of our planet.  Missions for the DC-8 are planned by the National Suborbital Education and Research Center (NSERC) at the University of North Dakota.  The aircraft itself is stationed at NASA’s Dryden Aircraft Operations Facility in Palmdale, CA.

]]> http://www.nserc.und.edu/learning/QandA/?feed=rss2&p=1 http://www.nserc.und.edu/learning/QandA/?p=2 http://www.nserc.und.edu/learning/QandA/?p=2#comments Wed, 27 Aug 2008 20:27:37 +0000 alex http://maple.umac.org/wp/?p=2 The chemical composition of the atmoshere includes 78% nitrogen (N), 21% oxygen (O) and 0.9% argon (Ar).  This makes up 99.9% of our atmosphere.  The remaining 0.1% are trace elements.

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