| | List of astronomers -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-04) |
 | | Friedrich Wilhelm August Argelander ( (A republic in central Europe; split into East German and West Germany after World War II and reunited in 1990) Germany, 1799 – 1875) |
| | (A bright crater on the moon) Aristarchus ( (Click link for more info and facts about Samos) Samos, circa 310 BC – circa 230 BC) |
| | Christoph Arnold ( (A republic in central Europe; split into East German and West Germany after World War II and reunited in 1990) Germany ]], 1650 – 1695) |
| www.absoluteastronomy.com /encyclopedia/L/Li/List_of_astronomers.htm (6608 words) |
