Here's the latest article from the Astronomy site at BellaOnline.com.

What are Comets?
What are comets made of, and why do they have tails? Some quick facts on the primitive "dirty ice balls" of the Solar System.

http://www.bellaonline.com/articles/art33712.asp

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I hope you all had an excellent Christmas. Best wishes for 2009. :)


Barbara Melville, Astronomy Editor
http://astronomy.bellaonline.com

One of hundreds of sites at BellaOnline.com