Astronomia

http://server5.wikisky.org/starview?object_type=2&object_id=3

http://www.wikisky.org/

http://www.cienciamao.if.usp.br/tudo/busca.php?key=simulacao%20das%20fases%20da%20lua

http://www.fpsoftlab.com/products.htm

http://www.cosmobrain.com.br/res/fasesdalua.html

http://www.calculatorcat.com/moon_phases/moon_phases.phtml