> There was a second, unrelated paper that suggests that aliens can live inside black holes. [ ... snip ... ] > In theory, highly advanced aliens could live o

> There was a second, unrelated paper that suggests that aliens can live inside black holes. [ ... snip ... ] > In theory, highly advanced aliens could live on such planets, being unobservable from outside while exploiting the high energies and large time dialtions available. reminds me of Frederick Pohl's Heechee Saga.