Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

Europe is quietly positioning itself to attempt one of the most audacious missions in planetary exploration: a dedicated landing on Enceladus to look directly for signs of alien biology. Instead of ...

The extra terrestrial encounter happened during Science Week with the children setting up their own X Files to investigate the crash site and UFO. Pupils arrived to discover scattered clues, strange ...