So now they lounged in the forward pilotchair, looking through the clear orb of the piscine eye at silvery-clouds of water vapour, and pretended a light, airy tone. "Jean, my beloved, are you well and ready to go?"

The cat followed him home.

Tomas Shine spent three and a half minutes in the stairwell hyperventilating. He heard Mrs Helen Acres, the widow from Unit Two, clatter and batter her way out her door, shopping bags in hand. She spotted the cat outside the stairway and reversed soundlessly into her unit.

Tomas sucked in a ragged breath, filling his lungs to the brim, and looked up. The cat waited on the far side of the glass door.

Spread like sails and pushed by distant starlight and supernovae, the four objects drift into the system. They are huge beyond understanding, incomprehensible in their composition. All our probes and all our science leave us no wiser.