US government officials launched an investigation into bizarre claims that a 'dead spaceman' was found inside a metal sphere ...

Somewhere in the Universe, an alien culture may have developed the technology to build giant megastructures around stars, harnessing their energy on an unimaginable scale.

Cold War-era files show diplomats searched for answers after reports of a strange sphere crash sparked international interest ...

Declassified UFO files have revealed how US officials investigated reports that a 'dead spaceman' had been discovered inside a mysterious metal sphere.

This is the fifth trance of files being released by the Trump administration.