An interactive exhibit in a Crossroads art gallery aims to astonish earthly and extraterrestrial visitors alike. Wichita, Kansas, artists and spouses Mike Miller and Meghan Miller have created ...

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 ...

Physicist Richard Feynman argued that fundamental limits of physics, biology, and time make interstellar contact between civilizations effectively impossible. He cited vast distances, the speed of ...