Imagine receiving an alert on your phone from a government agency at night, warning you about an alien attack, when you have barely made it onto your bed. That is what happened to thousands of ...

A hoax 'alien invasion' alert in Brazil caused panic and amusement, revealing vulnerabilities in emergency systems. Authorities are investigating the breach.

A boffin has warned humans to take their holidays before the end of the month — because an alien attack could be imminent. Harvard astrophysicist Avi Loeb believes a giant mass heading Earth's way may ...