People were allegedly advised to call the United Nations' "alien communications specialist" if they made contact with extraterrestrial life.

The United States is stepping back from the most direct test yet of possible alien biology on Mars just as new telescopes and probes are racing ahead to hunt for life light‑years away. Lawmakers have ...

Fuel would be an issue on such a long journey, so the AI-theorized probe would need a solar-electric power system and head ...