Ancient Greeks believed in alien life, as well as in gods, souls, and beings that inhabited the Moon, stars, and Heavens.

Scientists are looking for ways to detect alien warp drives lurking in space. While these hypothetical propulsion systems are most famous in science fiction stories like Star Trek, scientists believe ...

Astrobiologist Lisa Kaltenegger spends her days building miniature worlds. Kaltenegger and her colleagues study how different species and combinations of bacteria, plants, and fungi change the ...

Sometimes it seems like we got to the galactic party late and everyone has already gone home. Our species only figured out how to get into orbit within the last century. Since then, we’ve flown ...

What might aliens notice first about life on Earth? 👽 Neil deGrasse Tyson explores fascinating possibilities about first contact, biology, intelligence, and what truly makes our planet unique in the ...