The big story this week is that Rosetta’s Philae lander has touched down on a comet. During the descent, cartoonist and former physicist Randall Munroe captured the event in a series of 142 sketches.

Before the 1975 release of Monty Python and the Holy Grail, the British comedy troupe Monty Python was barely known overseas. People in Britain knew the group, made up of Graham Chapman, John Cleese, ...