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For questions that require plausible (better than suspension-of-disbelief) answers based on Real World science that are not necessarily constrained to the known limits of Real World science. Contrast with the hard-science, science-fiction and internal-consistency tags. This tag may not be used alone. This tag may not be used with the science-fiction, hard-science, or internal-consistency tags.

2 votes

Catastrophic event from space/earth that humanity are able to see it coming

How about the solar system enters a galactic high density dust cloud. The reduction in radiation would invoke a severe ice-age but, apart from spectacular dawns and dusks, not much else. Would that wo …
Martyn Adams's user avatar