The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, ...

Technosignatures are theoretical signs of technologically advanced alien civilizations, but so far, none of those civilizations have phoned home. Researchers from the Search for ExtraTerrestrial ...

It starts with a signal. Faint, strange, and unlike anything humanity has ever recorded. Within hours, it escalates into an event that changes the course of history as an alien arrival on Earth ...

Planets lacking plate tectonics and sufficient carbon dioxide and oxygen could make advanced civilizations like ours ...