http://en.wikipedia.org/wiki/Neptune
http://www.universetoday.com/44187/how-long-does-it-take-neptune-to-orbit-the-sun/
http://universetoday.com
http://www.universetoday.com/21606/diameter-of-neptune/
http://burro.astr.cwru.edu/stu/advanced/neptune.html
http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/neptune_name.shtml
http://www.google.com/search?hl=en&q=neptune&bav=on.2,or.r_gc.r_pw.r_qf.&biw=1366&bih=673&wrapid=tlif136188827162310&safe=active&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=FcQsUfbJG4ym8QSSlYCADw#imgrc=_
http://www.universetoday.com/44187/how-long-does-it-take-neptune-to-orbit-the-sun/
http://universetoday.com
http://www.universetoday.com/21606/diameter-of-neptune/
http://burro.astr.cwru.edu/stu/advanced/neptune.html
http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/neptune_name.shtml
http://www.google.com/search?hl=en&q=neptune&bav=on.2,or.r_gc.r_pw.r_qf.&biw=1366&bih=673&wrapid=tlif136188827162310&safe=active&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=FcQsUfbJG4ym8QSSlYCADw#imgrc=_