returning from the furthest bounds of what our forebears used to think of as a vast canal of milk that split their skies we feel an unexpected tugging at our hearts first we see the Sun (the only one of all we've visited that warrants that initial capital) then sweeping past the planetary orbits one by one, we catch a glimpse of Artemis Uranus and most gloriously Saturn till we reach our lunar starting point the City of Copernicus and from the dusty domes of home we gaze up at the sphere from which it all began and yearn for an impossible return to Earth—that brown and amber globe whose dully glowing surface we can never tread