Others do Magellans all year round. They vapour-trail the oceans, they trial in-flight food. Tierra del Fuego escapes their notice. For them the world’s a Janus that faces and unfaces the sun wherever they cruise at top speed. They could live in these circumstances forever, were it not for gravity. They watch the ice melt in their breezer. Others are Pascals for the duration. They stay grounded quietly in their room with enough preoccupation. This August they read of volcanoes under Antarctica. That will be a surprise for the Pacific Ocean. Neither have answers to who first circumnavigated this Janus.