3 ms·

Or an alien doomsday cult.

• mnw21cam 7y ago
  Or a shield to protect things nearby from the coming supernova.
  • rbanffy 7y ago
    A "paranova" is an interesting concept, but it'd probably be more effective to build multiple smaller ones closer to the settled worlds. We may want to build a smaller scale parasol for Venus so it cools down and can be eventually settled.