Sandra Falquet & Anne-Sophie Blancato "repaired" cracks in walls and street with colorful clay.
One of the many results from the first (annual?) "Urban Hacking School" held during the festival Perffusion 2011 in Strasbourg. Organized by Tony Weingartner & Rebel:Art.
"The robotic Cassini spacecraft now orbiting Saturn drifted in giant planet's shadow for about 12 hours in 2006 and looked back toward the eclipsed Sun. Cassini saw a view unlike any other. First, the night side of Saturn is seen to be partly lit by light reflected from its own majestic ring system.... Saturn's rings light up so much that new rings were discovered."NASA