“I have no clue if there are aliens out there,” concedes Douglas Vakoch, director of METI International, an organization committed to contacting extraterrestrial intelligence. But he is certain that ...

Machine-learning algorithms being used to better understand the communication of dolphins could form the basis for understanding aliens — if we ever find them. When you purchase through links on our ...

Orbits of the G objects at the center of our galaxy, with the supermassive black hole indicated with a white cross. Stars, gas and dust are in the background. Credit - Anna Ciurlo, Tuan Do/UCLA ...