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Comet Encounter
EXTREMELY RAREA long-period comet can be harder to spot far in advance than many asteroids—and makes excellent movie material.
THE SCENARIO
What could happen?
Could comet encounter cause the end of the world? A long-period comet can be harder to spot far in advance than many asteroids—and makes excellent movie material. The exact effects would depend on location, scale, warning time, and the systems affected. This page separates the spectacular premise from preparations that are useful in ordinary emergencies too.
REALITY CHECK
A civilization-ending collision is possible in principle, not a practical everyday threat.
THE USEFUL PLAN
There is no special comet shopping list. Build general resilience and enjoy the telescope.
THE VISUAL FILE
Inside the scenario
