http://spaceplace.nasa.gov/starfinder3/
http://www.allthesky.com/constellations/zodiacposter.html
http://www.thecelestialsolarsystem.com/cancer_constellation.html
http://stardate.org/nightsky/constellations
http://stardate.org/nightsky/constellations/leo
http://stardate.org/nightsky/constellations
http://www.astroviewer.com/current-night-sky.php?lon=-73.94&lat=40.67&city=New+York+City&tz=EST
http://www.nightskyatlas.com/index.jsp?rightAscension=21.9&declination=-5.5
http://www.space.com/21759-ophiuchus.html
http://www.davidmalin.com/fujii/source/UMa.html
http://www.allthesky.com/constellations/zodiacposter.html
http://www.thecelestialsolarsystem.com/cancer_constellation.html
http://stardate.org/nightsky/constellations
http://stardate.org/nightsky/constellations/leo
http://stardate.org/nightsky/constellations
http://www.astroviewer.com/current-night-sky.php?lon=-73.94&lat=40.67&city=New+York+City&tz=EST
http://www.nightskyatlas.com/index.jsp?rightAscension=21.9&declination=-5.5
http://www.space.com/21759-ophiuchus.html
http://www.davidmalin.com/fujii/source/UMa.html