While their experiences do not tell us what an alien would eat, they do show us that leaving Earth changes the way we eat.

And if aliens made of different stuff potentially possess consciousness, then why not minds made of silicon, metal, and ...

Science fiction stories about “alien” invaders are often political allegories for anxieties around immigration. Now, a ...

If humans ever receive a message from intelligent aliens, the biggest challenge may not be how far away they are, but how to communicate at all. Our nearest star system is more than four light-years ...

Spielberg’s hotly anticipated new movie gives fresh impetus to a dilemma that has long captured the imaginations of filmgoers, scientists and the great director himself ...