For generations, humans have imagined what it would be like to discover life beyond Earth. Would alien beings look anything like us? Would they communicate through sounds, signals, or something ...

Explore 25 of the most famous movie aliens, from terrifying Xenomorphs to beloved E.T. Discover iconic extraterrestrials that ...

Assuming intelligent aliens know how to harvest energy from stars, would humanity be able to spot these high-level structures? Reading time 3 minutes Assuming aliens do physics like us but are ...

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

When Neil deGrasse Tyson was 9 years old, he visited the Hayden Planetarium for the first time. Growing up gazing into light pollution in the Bronx, he had no idea there were that many stars. “I was ...

Quiz: Do you know your aliens? TENTACLED monsters, pale skinny humanoids, shimmery beings of pure energy… When it comes to the question of what alien life forms might look like, we are free to let our ...