Ideas for new image

http://dictionary.cambridge.org/search/british/?source=gadgets&q=node

http://dictionary.cambridge.org/dictionary/british/node_2

a place where things such as lines join, or where a leaf and stem join on a plant:

http://en.wiktionary.org/wiki/node

From Latin nodus, cognate of English knot. (astronomy) The point where the orbit of a planet, as viewed from the Sun, intersects the ecliptic. The ascending and descending nodes refer respectively to the points where the planet moves from S to N and N to S. The respective symbols are ☊ and ☋. (computer networking) A computer or other device attached to a network. (engineering) The point at which the lines of a funicular machine meet from different angular directions; -- called also knot.

http://en.wikipedia.org/wiki/Node_%28astronomy%29

An orbital node is one of the two points where an orbit crosses a plane of reference to which it is inclined.

Earth orbit nodes - When night and day take the same time. These two points in the sun orbit are named equinoxes.