Scientists hunting for life beyond Earth have long thought that water is one of the key indicators. But a group of experts now says that looking for life on water–rich planets could be a waste of time ...

According to 404 Media, a study published in the Monthly Notices of the Royal Astronomical Society detailed how scientists designed a virtual alien lifeform that could help astronomers recognize life ...

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

Letters: Readers offer their explanations for the absence of hard evidence for extraterrestrial civilisations, in response to an article by Adam Kirsch ...