New Scientist wrote an article on this: http://www.newscientist.com/article/dn22134-first-gliders-navigate-everchanging-penrose-universe.html http://www.newscie

New Scientist wrote an article on this: http://www.newscientist.com/article/dn22134-first-gliders-navigate-everchanging-penrose-universe.html http://www.newscientist.com/article/dn22134-first-gliders-na...