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Q&A Are gamma rays always harmful?

Two days ago I asked how we can detect a (really) small black hole. The best answer (to me) was "gamma rays". Since this black hole is relatively close to our planet (a few AUs), this could be a pr...

5 answers  ·  posted 7y ago by Lupetto‭  ·  last activity 7y ago by Lupetto‭

Question reality-check physics black-holes