Astronomy





Holt science & technology astronomy.. Austin, Tex.: Holt, Rinehart and Winston, 2002. Print.

"CLASSIFICATION." Cornell Astronomy. N.p., n.d. Web. 6 Jan. 2011. .

" Google Image Result for http://www.examiner.com/images/blog/wysiwyg/image/Spiral_Galaxy.jpg." Google. N.p., n.d. Web. 6 Jan. 2011. .

http://www.google.com/imgres?imgurl=http://www.ipac.caltech.edu/wire/images/sp-andromeda.gif&imgrefurl=http://www.ipac.caltech.edu/wire/beginners/slide3.html&usg=__ToZnRQeV5nAyoFd5O4oLU2ALxwA=&h=390&w=480&sz=126&hl=en&start=0&sig2=hsg3-h09NWyEzSd5Xkl18A&zoom=1&tbnid=2uVIEh6aK0umJM:&tbnh=151&tbnw=217&ei=PgQmTd6hGsGSnwfJzdzYAw&prev=/images%3Fq%3Dspiral%2Bgalaxies%26um%3D1%26hl%3Den%26safe%3Dactive%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26biw%3D1024%26bih%3D595%26tbs%3Disch:1&um=1&itbs=1&iact=hc&vpx=507&vpy=310&dur=446&hovh=198&hovw=244&tx=134&ty=187&oei=PgQmTd6hGsGSnwfJzdzYAw&esq=1&page=1&ndsp=12&ved=1t:429,r:10,s:0

" Google Image Result for http://apod.nasa.gov/apod/image/9809/ngc4303_frei.jpg." Google. N.p., n.d. Web. 6 Jan. 2011. .

" Google Image Result for http://images.astronet.ru/pubd/2004/11/22/0001201256/ngc2207_hst.jpg." Google. N.p., n.d. Web. 6 Jan. 2011. .

" Google Image Result for http://www.astronomy-pictures.net/barred-spiral-galaxy.jpg." Google. N.p., n.d. Web. 6 Jan. 2011. .

" Google Image Result for http://upload.wikimedia.org/wikipedia/commons/thumb/d/d3/Abell_S740,_cropped_to_ESO_325-G004.jpg/220px-Abell_S740,_cropped_to_ESO_325-G004.jpg." Google. N.p., n.d. Web. 6 Jan. 2011. .

" Google Image Result for http://ircamera.as.arizona.edu/NatSci102/NatSci102/images/m87.gif." Google. N.p., n.d. Web. 6 Jan. 2011. .