(via MAKEzine blog)
A set of simple (and honestly – obvious enough that I should have thought of and done this on my own) instructions for making canisters which project constellations on walls/ceilings/etc, courtesy of NASA. A great teaching project for kids, too. My older son is getting to the age where he’ll probably be really interested in things like this, anyway. And of course, whatever the older does, the younger wants to do.
[tags]NASA, Constellations, DIY projects[/tags]