Overlooking signs of alien life may be humanity’s biggest mistake, according to scientists warning NASA could miss hidden ...

A man who spent decades in the US Army where he was allegedly tasked with covering up evidence of extraterrestrial life has spoken about his lifelong relationship with a telepathic 'mantis alien.' ...

Thomas Mulligan examines the scientific challenge of defining and searching for non-Earth-like alien life forms that may not rely on carbon, water, or DNA.