51 | Add to Reading ListSource URL: www.aura-astronomy.orgLanguage: English - Date: 2015-01-08 16:22:34
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52 | Add to Reading ListSource URL: www.parsec.co.za- Date: 2014-05-31 05:37:40
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53 | Add to Reading ListSource URL: dailydragon.dragoncon.orgLanguage: English - Date: 2014-09-01 00:12:50
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54 | Add to Reading ListSource URL: www.iau.orgLanguage: English - Date: 2012-08-13 04:18:38
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55 | Add to Reading ListSource URL: www.aavso.orgLanguage: English - Date: 2014-05-20 14:44:39
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56 | Add to Reading ListSource URL: spacemath.gsfc.nasa.govLanguage: English - Date: 2010-05-02 13:33:16
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57 | Add to Reading ListSource URL: spacemath.gsfc.nasa.govLanguage: English - Date: 2013-07-29 08:29:10
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58 | Add to Reading ListSource URL: spacemath.gsfc.nasa.govLanguage: English - Date: 2009-07-20 16:07:48
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59 | Add to Reading ListSource URL: spacemath.gsfc.nasa.govLanguage: English - Date: 2011-05-05 13:03:54
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60 | Add to Reading ListSource URL: spacemath.gsfc.nasa.govLanguage: English - Date: 2012-12-17 11:08:54
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