What if the government offered you a one‑way ticket to another planet? This video explores the astonishing story of a secret human‑alien exchange mission that sent astronauts 40 light years from Earth ...

While it sounds like the plot of an Andy Weir novel. If an advanced civilization wanted to tap nearly all the power of its star, it could gather energy by putting a giant collection of light-catching ...

golden record that can decipher data with hints of mathematics and chemistry. It is hoped that it will become a kind of common language between the unknown extraterrestrial civilizations. A novel ...