Alien probes could be hiding among us in plain sight as we search for them in the wrong places. This is the theory of professor Alex Ellery of Carleton University who argues that if self-replicating ...

Avi Loeb has suggested that humans themselves may be 'intelligent, self-replicating and self-repairing autonomous probes' built by an advanced alien civilisation, arguing in a new essay published ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other solar systems, even if that was not their original intention. Five robotic ...