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12 September 2011
- 18:5318:53, 12 September 2011 diff hist 0 N File:Mars opposition 2010 alan friedman.jpg No edit summary current
- 18:5318:53, 12 September 2011 diff hist 0 N File:MarsDust picdumidi c740.jpg No edit summary current
- 18:5318:53, 12 September 2011 diff hist 0 N File:Mars 2007 hst-2007-45-a.jpg No edit summary current
- 18:5318:53, 12 September 2011 diff hist 0 N File:Elliptical orbit anim big.gif No edit summary current
- 18:5218:52, 12 September 2011 diff hist +308 Explore Mars No edit summary
- 18:4018:40, 12 September 2011 diff hist +14,023 N Explore Mars Created page with "Mars is our nearest planetary neighbor. Like a distant unexplored land, it has been an object of curiosity for millennia. It was Tycho’s precise measurement of the orbit of Mar..."
- 07:2407:24, 12 September 2011 diff hist +257 Light and Telescopes →Some Properties of your Eyes
- 07:2107:21, 12 September 2011 diff hist +3 Light and Telescopes →Experimenting with a Lens
- 07:0607:06, 12 September 2011 diff hist +82 Elementary Astronomy Laboratory Activities No edit summary
- 07:0307:03, 12 September 2011 diff hist +6 Light and Telescopes →Some Properties of your Eyes
- 07:0107:01, 12 September 2011 diff hist +62 Light and Telescopes No edit summary
- 06:5906:59, 12 September 2011 diff hist −40 Light and Telescopes →Some Properties of your Eyes
- 06:5706:57, 12 September 2011 diff hist +3 Light and Telescopes →Telescopes
- 06:5606:56, 12 September 2011 diff hist 0 N File:Airy-pattern.png No edit summary current
- 06:5606:56, 12 September 2011 diff hist −1 Light and Telescopes →Telescopes
- 06:5506:55, 12 September 2011 diff hist +2,047 Light and Telescopes →Telescopes
- 06:2306:23, 12 September 2011 diff hist +269 Light and Telescopes →Telescopes
- 06:2106:21, 12 September 2011 diff hist −252 Light and Telescopes →Experimenting with a Lens
- 06:1806:18, 12 September 2011 diff hist +693 Light and Telescopes →Telescopes
- 06:1106:11, 12 September 2011 diff hist +296 Light and Telescopes No edit summary