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Q&A Covering up an extinction level event caused by an astronomical anomaly

I would like to know how possible/plausible it is that any space agency could spot an object larger than our sun, that doesn't reflect light, heading towards us in time to give us somewhere around ...

4 answers  ·  posted 6y ago by Cthulhu‭  ·  last activity 6y ago by Cthulhu‭

Question astronomy reality-check