Posted by danielle on Sunday, January 24, 2010 at 12:23pm.
http://www.can-do.com/uci/ssi2000/ds-planets.html
http://astrogeology.usgs.gov/Projects/WGCCRE/
and
http://www.google.com/search?hl=en&client=firefox-a&rlz=1R1GGGL_en___US357&hs=Sjm&q=elementa+solar+system+planets&btnG=Search&aq=f&aql=&aqi=&oq=
Read widely, and let us know what you decide.
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