Sources

"Aurora," Encyclopedia Encarta, CD-ROM, Microsoft Corporation,1998.

http://www.athena.ivv.nasa.gov/curric/space/aurora/index.html

http://www.cs.princeton.edu/~rywang/berkeley/singles/rainbows/pleasure.html

http://www.unidata.ucar.edu/staff/blynds/rnbw.html

http://home.earthlink.net/~nwwallace/rainbows.htm

http://www.isc.tamu.edu/~astro/research/sandiego.html

http://www.reefnet.on.ca/gearbag/wwwgfl.html

http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/opt/ice/sd.rxml

http://www.northern-lights.no/zope/Contest/Gallery/?lang=en

http://arcticculture.about.com/culture/arcticculture/gi/dynamic/offsite.htm?site=http%3A%2F%2Fgedds.pfrr.alaska.edu%2Faurora%2Fenglish%2Fintro1.htm

http://www.teelfamily.com/activities/aurora/

http://www.skypub.com/sights/moonplanets/mar99bluemoon.html

http://www.geo.mtu.edu/weather/aurora/images/aurora/jan.curtis/

http://www.exploratorium.edu/learning_studio/auroras/

http://climate.gi.alaska.edu/Curtis/curtis.html

http://ast.leeds.ac.uk/haverah/spaseman/aurora.shtml

http://astro.uchicago.edu/home/web/gd1/flash.html

http://antwrp.gsfc.nasa.gov/apod/ap970909.html

http://flzhgn.home.mindspring.com/grnray.htm

Ludlum, David M., National Audubon Society Field Guide to North American Weather, New York: Chanticleer, 1997.