When astronomers first picked up a perfectly regular radio heartbeat from deep space in 1967, some of them half-jokingly ...

Science fiction has long speculated about the possibility of first contact with an alien species from a distant world and how we might be able to communicate with them. But what if we simply don’t ...

The first unmistakable signal from another intelligence may not be a cheerful greeting. A growing group of researchers is arguing that our inaugural contact is more likely to be a distress call, the ...