Scientists say extraterrestrial life may exist elsewhere in the universe, but vast distances, enormous energy requirements ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Actual science finds itself badly outnumbered by entertainment repackaged as factual. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This ...

A physicist has argued that fundamental cosmic constraints make visits from alien civilizations to Earth effectively impossible. Factors such as vast interstellar distances, the speed of light as a ...

On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be unexplained flying objects. These file dumps were the culmination of a ...