Modern astrobiology suggests that alien life would not evolve randomly, but under the same ruthless evolutionary pressures that shaped life on Earth. Scientists expect traits like symmetry, vision, ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

When astrobiologists are asked what aliens might look like, many now point not to distant galaxies but to some of the ...

For generations, science fiction has imagined what life might look like on other worlds. These aliens are fictional, sure, but some of them are informed by real evolutionary processes on Earth. That's ...