The search for intelligent life in our galaxy is shifting from abstract speculation to detailed cartography, as researchers try to sketch where alien societies might arise, thrive and vanish inside ...

Add Yahoo as a preferred source to see more of our stories on Google. Sometimes it seems like we got to the galactic party late and everyone has already gone home. Our species only figured out how to ...

If so, why haven’t they said hello? The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, it was the “canals” of Mars. Then ...