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True, but our radio telescopes have also been improving. The Square Kilometre Array, under construction in Australia, would supposedly be able to detect "an air
by dandelany 11y ago
True, but our radio telescopes have also been improving. The Square Kilometre Array, under construction in Australia, would supposedly be able to detect "an airport radar system on a planet 50 light years away". I suspect that an advanced civilization 500 ly away would still likely leak enough radio for us to detect it with current or near-future technology.
- mcdougle 11y agoUnless their technology developed along a completely different path, and the concept of radio waves is too foreign to them because they use an altogether different method of communication that we can't even begin to imagine.