Add Yahoo as a preferred source to see more of our stories on Google. The Search for Extraterrestrial Intelligence (SETI) focuses ...

A NASA-backed study reveals that alien civilizations could detect human signals sent to spacecraft. Radio transmissions aimed at ...

The Deep Space Network (DSN) is just the sort of tool aliens could one-day detect, transmitting from Earth. Credit: NASA/JPL What ...

Research from the Search for Extraterrestrial Intelligence (SETI) Institute has found that we may have missed transmissions from ...

Here's what you'll learn when you read this story: Even the most sophisticated radio arrays have not yet detected any signals ...