3 ms·
Mostly we want to find life elsewhere that is interstellar. We look for side effects of tools, like radio frequency. I suppose an advanced civilization between
by sroussey 5y ago
Mostly we want to find life elsewhere that is interstellar. We look for side effects of tools, like radio frequency.
I suppose an advanced civilization between planets or even stars might have migrated off radio signals though.
- sroussey 5y agoOr they might have learned that the galaxy is dangerous and masked any such signals. !!