“When an artist explains what he is doing, he usually has to do one of two things: either scrap what he has explained, or make his subsequent work fit in with the explanation.”  Perhaps that is why the author of the quote, Alexander Calder, was so reluctant to describe his art except to say that it was modeled on the Universe. Today is Calder’s 113th birthday, and to celebrate the event, Google, which is humankind’s greatest effort to catalogue the universe, has replaced its logo with a Calder-inspired interactive mobile.

The logo can be manipulated by rolling over it with the mouse. It should be almost as popular as the famous Les Paul logo, with an electric guitar that people could play.