> Inside a 'thick' nebula, obscuring all other entities in the sky except for their own star and planets. Imagine an interstellar object like Oumuamua passing through and the complete perplexity of a civilization observing it and wondering where it could have come from.
You'd be able to peer through the nebula with higher frequency bands than visible light, no?
If a civilisation is able to notice an interstellar object like ’Oumuamua, they are probably advanced enough to observe what's outside their nebula.
But without a long history of looking up at the stars with our own eyes, how would we ever have thought to point radio telescopes up there?
There might be interesting phenomena going on right now that we don't know about just because they're too far awar from what our natural senses can detect.
You'd be able to peer through the nebula with higher frequency bands than visible light, no?
If a civilisation is able to notice an interstellar object like ’Oumuamua, they are probably advanced enough to observe what's outside their nebula.