태양은 공전하는건가요? 자전하는 건가요?:
'via Blog this'
- http://wiki.answers.com/Q/Does_the_sun_revolve_or_rotate?#slide=5
- http://forums.udacity.com/questions/9006668/interesting-question-does-the-sun-move-rotates-revolves
- http://www.smh.com.au/news/Big-Questions/Does-the-sun-revolve-on-an-axis-or-is-it-stationary-in-the-middleof-the-solar-system/2005/06/10/1118347582434.html
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