Scientists are searching for alien life in more than 1,300 galaxies. The hunt for any extraterrestrial signals has helped ...

Extraordinary claims require extraordinary evidence,” Carl Sagan once warned a maxim now resonating through telescopes worldwide as astronomers grapple with a mind-bending new discovery. The James ...

But short of alien's landing in New York City, how do we know what they are like? Using his own expert understanding of life on Earth and Darwin's theory of evolution--which applies throughout the ...

In space, no one can hear you scream, but they can sure hear you scratching your head as you try to make sense of the ...