"Autumnal Equinox" The autumnal equinox is at ecliptic longitude 180° and at right ascension 12h. In the southern hemisphere, the autumnal equinox corresponds to the center of the Sun crossing the celestial equator moving northward and occur... http://whatishot.site88.net/interestin...

Modular Origami Modular origami, or unit origami, is a paperfolding technique which uses multiple sheets of paper to create a larger and more complex structure than would be feasible using single-piece origami techniques. Each individual sheet of ... http://articles.top501.nu/2008/07/11/p...

MOdular Origami Get More from Ask-About-swicki.eurekster.com/MOdular+Origami Modular origami, or unit origami, is a paperfolding technique which uses multiple sheets of paper to create a larger and more complex structure than would be feasible ... http://articles.top501.nu/2006/07/05/p...