The 20th century saw humankind’s first careful steps outside of the biosphere in which our species has evolved. Whereas before humans had experienced the bitter cold of high altitudes, the crushing ...

Alien civilizations, cosmic signals, and megastructures drive this deep search for intelligent life beyond Earth. The video ...

Each of the “Lost Boys” started out as terminally ill children put into an adult synthetic body. Instead passing away, they awaken, but the face they see in the mirror isn’t really who they are in ...