Death's End

The final installment in the Remembrance of Earth's Past trilogy, this novel spans the first responses to the Trisolaran contact to the heat death of the universe, and humanity's struggle to survive in the face of discovery of the wider universe.

Motifs

• Big Crunch

  At the end of the universe, most advanced races have retreated into self-sustaining pocket universes to survive the Big Crunch, to emerge after the universe has cooled again. So much energy and mass has been used to furnish these pocket universes that there is no longer enough mass to cause the Big Crunch, so a coalition decides to beseech the universes to return all their mass to the universe to allow the next universe to have a chance to form.

• O'Neill Cylinder

  After humanity knows that Earth will be destroyed by aliens, they move to O'Niell Cylinders and other space stations in the shadow of Jupiter to avoid debris from the sun's destruction.