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mk  ·  4063 days ago  ·  link  ·    ·  parent  ·  post: Biological Intelligence is a Fleeting Phase in the Evolution of the Universe

We also have to consider the limited frequencies that we have been listening on, even in the EM spectrum. I think that few people realize that SETI listens at the hydrogen line.

There has been the Wow Signal, and others, even there.

I wonder how loud Earth is at 1420 MHz.