The US government has been sharing more information about UFOs. That's fueling excitement over the possibility of the president announcing that humans are not alone.

The truth may be out there, but Americans are split on what the truth is: just under half of people believe all sightings of unidentified flying object (UFO), also known as unidentified anomalous ...

It doesn’t take much to ignite a new wave of alien conspiracy theories on social media. But beyond the internet speculation lies a serious scientific question: If billions of planets could support ...