The secret wisdom of ants -- Tea on Mars -- Archimedes' displacement -- Postcards from Jupiter -- Galileo 1: Telescopic vision -- Galileo 2: Falling bodies -- On Mars: Pathfinder to Yogi -- Letter from Neptune -- Falling bodies -- Einstein 1 -- Einstein 2 -- Pythagoras -- Pluto -- Claudius Ptolemy -- Lost: Death of the author -- Towards Venus: Then and now -- After the rain